Precision financial tools.
No advice, just math.
Instant, logic-based calculators for mortgages, investing, debt, savings, and more. No signup. No fluff.
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Investing
View all →100 Minus Age Asset Allocation Calculator
Calculate stock-vs-bond allocation using the 100-minus-age rule of thumb: see the percentage split the rule produces for any age you put in.
Active vs Passive Investing Calculator
Compare an active fund against an index tracker over any horizon, and see the gross return active needs just to break even after charges.
Annualized Return Calculator — Any Holding Period
Convert any holding-period return into an annualized rate. Enter start value, end value, income, and months held — including periods under a year.
Annuity Present Value Calculator
Calculate the present value of an ordinary annuity from regular payments, periodic rate, and the number of periods until the stream ends.
APR to APY Calculator
Convert a stated annual rate to its effective annual yield at any compounding frequency, with the gap in percentage points and the continuous ceiling.
Asset Allocation Calculator
Model a stock, bond and cash split from age and risk tolerance using the 110-minus-age rule, and see the amounts each allocation implies.
Asset Allocation Drift Calculator
Calculate drift between current and target asset allocation to decide if rebalancing is needed. Enter equity to see drift percentage and rebalance flag.
Asset Allocation Return Calculator
Calculate weighted average return of a portfolio across equity, bond, and cash allocations. Enter equity return to see weighted portfolio return.
Mortgage
View all →15 vs 30 Year Mortgage Calculator
Compare a 15-year versus 30-year mortgage on the same loan: monthly payment for each term, total interest, and the interest difference between them.
Balloon Mortgage Calculator
Estimates the lump sum due at the end of a balloon mortgage, plus the monthly payment and total paid before the balloon, from the amount, rate, and terms.
Blended Rate Mortgage Calculator
Calculate the blended (weighted-average) interest rate across two mortgage loans of different balances and rates. Free and educational.
Bridging Loan Calculator
Calculate the total cost of a short-term bridging loan including monthly interest and arrangement fees over a chosen exit timeline.
Buy to Let Affordability Calculator
Calculate buy-to-let interest cover ratio from property price, rent, loan-to-value and a stress-tested rate, against the cover a lender requires.
Construction Loan Calculator
Calculate interest-only payments and total interest paid during a construction loan build phase, accounting for staged drawdowns.
Down Payment Calculator
Down payment, closing costs at a fixed 2.5%, total cash needed, and months to reach it from current savings and a monthly amount.
Early Mortgage Payoff Calculator
See how many years a monthly overpayment cuts from a mortgage and the interest it removes, plus the accelerated payoff term and total extra paid.
Budget
View all →50/30/20 Budget Rule Calculator
Calculate your 50/30/20 budget rule split from monthly take-home income and compare needs, wants, and savings against your actual spending.
Annual Car Running Cost Calculator
Calculate the full annual cost of car ownership: fuel, insurance, road tax, servicing, tyres, and depreciation. See true per-mile cost.
Annual Expense Calculator
Add up your total yearly expenses from monthly recurring costs plus one-off annual bills. See where your money goes across each spending category.
Bread Maker Break-Even Calculator
Calculate when a bread maker pays for itself. Enter machine cost, ingredient cost, shop loaf price, and weekly usage to see break-even in weeks.
Budget Calculator
See the monthly surplus or deficit left by take-home income and five expense groups, with savings rate, housing share and the annual total.
Budget vs Actual Variance Calculator
Calculate budget variance from budgeted versus actual spending with monthly figure and annualised projection of the gap.
Coffee Machine vs Cafe Break-Even Calculator
Calculate how quickly a home coffee machine pays back versus café purchases — per-cup savings and multi-year cumulative totals.
Grocery Budget Calculator
Turn a per-person grocery rate into weekly, monthly and annual totals for your household, with adults and children costed separately.
Business & Startup
View all →Accounts Payable Turnover Calculator
Calculate accounts payable turnover and days payable outstanding from supplier purchases and average payables, with the ratio each payment term implies.
Accounts Receivable Turnover Calculator
Calculate accounts receivable turnover and days sales outstanding from credit sales and average AR — how fast your invoices actually convert.
Adjusted EBITDA Calculator
Calculate adjusted EBITDA with add-backs for owner compensation, one-off costs, and non-recurring items — the version a buyer or lender will actually use.
Airbnb Host Profit Calculator
Calculate Airbnb host profit by entering your nightly rate, occupancy, fees, cleaning costs, mortgage, and expenses to see monthly and annual net profit.
Asset Turnover Calculator
Calculate asset turnover ratio from revenue and total assets — a measure of how efficiently a business generates sales from its asset base.
Break-Even Calculator
Calculate break-even point. Enter fixed costs, selling price, and variable cost to see units needed to cover costs. Free and educational.
Business Emergency Fund Calculator
Calculate your business emergency fund target and months to reach it based on operating expenses, coverage months, and monthly contributions.
Capital Expenditure Calculator
Calculate capital expenditure from PP&E change and depreciation, plus capex intensity as a percentage of revenue for sector comparison.
Hospitality
View all →Hotel ADR Calculator
Calculate hotel ADR, RevPAR, and occupancy from revenue and rooms data. Enter room revenue, rooms sold, rooms available, and period to size hotel performance.
Catering Business Calculator
Calculate catering business profit by entering events, guests, price per guest, food cost, labour, and fixed overheads to see monthly net profit.
Food Cost Percentage Calculator
Calculate restaurant food cost percentage and gross margin from menu price and ingredient cost — the operator's first sanity check on a dish.
Food Truck Profit Calculator
Calculate food truck monthly profit from days worked, items per day, price, food cost, labour, and fixed costs. Free — no signup.
Menu Pricing Calculator
Calculate menu price from ingredient cost and target food cost percentage. Enter labour allocation per dish to size table economics.
Restaurant Profit Calculator
Calculate restaurant monthly profit from revenue, food cost %, labour cost %, and fixed overheads. Check prime cost ratio.
Creator Economy
View all →Affiliate Commission Calculator
Calculate affiliate commission earnings from clicks, conversion rate, order value, and commission percentage. Free educational tool.
Affiliate Marketing Income Calculator
Calculate affiliate marketing income from clicks, conversion rate, and commission per sale or per-order commission rate.
Amazon Associates Income Calculator
Calculate Amazon Associates affiliate income from traffic, click-through rate, conversion rate, and average commission per sale.
App Revenue Calculator
Calculate app net revenue from daily active users, revenue per user and the store commission. Shows gross, store fees and annual net.
Beauty Business Revenue Calculator
Calculate beauty business annual revenue from clients per day, service price, working days, and uplift from retail product sales.
Blog Advertising Revenue Calculator
Calculate blog advertising revenue from pageviews and CPM rate, across different ad networks and ads-per-page densities.
Content Creator Revenue Calculator
Calculate monthly content creator revenue from ad RPM, sponsorships, and affiliate commissions. Enter views to see total monthly revenue.
Gumroad Earnings Calculator
Calculate Gumroad net earnings from sales volume, product price, and the platform plus payment processing fees taken off the top.
Real Estate
View all →After Repair Value (ARV) Calculator
Calculate real estate flip profit from after-repair value and repair costs, with the 70% rule check and the maximum offer for a target profit.
Buy-to-Let Calculator
Calculate buy-to-let ROI by combining rental yield and property appreciation over your chosen hold period. Enter price, rent, and expenses to get started.
Buy-to-Let Mortgage Stress Test Calculator
Stress test a rental property mortgage against lender DSCR requirements: see whether the expected rent covers interest at a stressed rate.
Cap Rate Calculator
Calculate real estate cap rate from net operating income and purchase price, plus the implied value at typical market cap rates.
Cash-on-Cash Return Calculator
Calculate cash-on-cash return on a property deal: annual pre-tax cash flow divided by the cash actually invested, with payback years and a rating.
Data Centre Investment Calculator
Calculate data centre investment cap rate and net operating income from power capacity, rental rate per kW, occupancy, and operating costs.
Property Appreciation Calculator
Project future property value from a compound annual appreciation rate. Enter a current value, growth rate, and time horizon to see the projected value.
Real Estate Syndication LP Return Estimator
Estimate the LP annualised return on a real estate syndication from preferred return, GP promote, and exit multiple. Simple-pref accrual.
Income
View all →After-Tax Yield Calculator
Calculate after-tax yield on bonds or savings by entering your pre-tax yield and marginal income tax rate to see the return you actually keep.
Airbnb Income Calculator
Calculate Airbnb income with monthly and annual net estimates from nightly rate, occupancy percentage, cleaning fees, and operating costs.
Airbnb vs Long-Term Rental Calculator
Compare net income from Airbnb short-term rental vs long-term rental strategies with this annual income calculator for the same property.
Amazon Flex Pay Calculator
Work out how much you can earn with Amazon Flex after vehicle costs and a self-employment tax reserve. See annual net income and effective hourly rate.
Annual Leave Value Calculator
Calculate the monetary value of your annual leave days as a share of salary — useful when negotiating PTO into a comp package.
Annual to Monthly Salary Calculator
Convert annual salary to monthly, weekly, daily, and hourly equivalents using standard full-time working-time assumptions for any income.
Career Earnings Peak Calculator
Project your peak career earnings with this career earnings peak calculator using current salary, annual growth rate, and years to peak.
Charitable Donation Tax Relief Calculator
Estimate the tax relief on a charitable donation from your marginal rate, and see the net cost to you and the total the charity receives.
Digital Nomad & Freelance
View all →Agency Margin Calculator
Compute agency gross and net margin from revenue, contractor costs, and overhead. Returns net margin, gross profit, net profit, and gross margin in one view.
Agency vs Freelance Income Calculator
Compare net income from running an agency versus working as a freelancer. Returns net income, effective hourly rate, and the gap between the two models.
AI Implementation ROI Calculator
Calculate AI implementation ROI from cost, time savings, labour hourly rate, and the multi-year horizon over which it pays back.
Annual Freelance Revenue Calculator
Project annual freelance revenue from monthly billable hours, hourly rate, and effective working months per year. Returns annual revenue and monthly revenue.
Billable Hours Calculator
Calculate annual billable hours and revenue from weekly hours, utilisation rate and weeks worked. See billable versus non-billable time and income.
Client Acquisition Cost Calculator
Compute customer acquisition cost (CAC) and the LTV-to-CAC ratio from marketing spend, sales spend, new clients, and average client value.
Coworking vs Office Calculator
Compare total cost of a coworking membership versus a dedicated office over a chosen planning horizon, including utilities and setup.
Freelance Annual Income Calculator
Calculate your annual net freelance income from hourly rate, billable hours, working weeks, and overhead costs to see gross and net figures.
Productivity & Time-Value
View all →AI Tool ROI Calculator
Calculate AI tool ROI by comparing subscription costs against time savings valued at your hourly rate, given hours saved per week.
Automation ROI Calculator
Calculate the ROI of an automation tool. Compare hours saved, hourly value, setup cost, and subscription fees to find break-even and annual savings.
Commute Time Wealth Loss
Estimate lifetime wealth loss from commuting time converted to monetary value based on hourly income potential and career earnings.
Commute vs Pay Rise Calculator
Compare new job salary increase against the time and cost of a longer commute. Enter one-way commute min to see net benefit or cost and salary increase.
Conference Attendance ROI Calculator
Calculate conference attendance ROI including time cost and expected income uplift. Enter registration cost to see net benefit and total investment.
LinkedIn Premium Value Calculator
Calculate LinkedIn Premium ROI from expected job offers and salary uplift over benefit period. Enter subscription to see net benefit and annual subscription.
Overtime Pay vs Free Time Logic
Calculate whether working overtime is financially worthwhile after tax, fatigue costs, and the value you place on your free time.
Major Purchases
View all →Air Fryer vs Oven Calculator
Work out how long an air fryer takes to pay back its price in energy savings, from per-meal kWh for each appliance and your own electricity rate.
Biweekly Auto Payment Calculator
Calculate interest savings from biweekly versus monthly auto loan payments — see how much an extra payment per year actually saves.
Boat Ownership Cost Calculator
Calculate boat ownership costs including mooring, insurance, fuel, maintenance, and depreciation to estimate annual and lifetime totals.
Boiler Replacement Savings Calculator
Calculate annual savings and payback period from replacing an old inefficient boiler, given current annual gas bill and efficiency gain.
Car Depreciation Calculator
Calculate car depreciation over time. Enter purchase price, annual rate, and years to see remaining value and total lost.
Car Loan vs Cash Calculator
Compare car loan versus cash purchase including the investment opportunity cost on the cash you'd otherwise tie up in the vehicle.
Car Running Cost Calculator
Calculate true annual car running cost. Sum insurance, fuel, maintenance, road tax, inspection fees, and depreciation to see real cost of ownership.
Dishwasher Payback Calculator
Calculate payback period for a dishwasher in time saved and water/energy savings vs handwashing. See years to break-even on purchase price.
Lifestyle
View all →Airport Parking vs Taxi Calculator
Compare airport parking versus taxi cost based on trip duration and convenience — which way wins at your typical trip length.
Bicycle Commute Savings Calculator
Calculate how quickly a bicycle pays for itself in commute savings. See five-year savings and payback period. Free and educational.
Car Depreciation per Mile Calculator
Calculate car depreciation per mile to understand true driving cost. Enter purchase price, resale value, and miles driven to see the per-mile loss.
Event Cost Calculator
Calculate all-in event cost: tickets, travel, accommodation, food, extras. Enter ticket cost to see all-in cost plus per-person if splitting.
Fuel Tank Fill Cost Calculator
Calculate fuel tank fill cost with monthly, annual, and five-year projections — the real cost of refuelling at your current pattern.
Music Lesson ROI Calculator
Calculate music lesson ROI based on per-hour cost, frequency, and the long-run value of musical skill or income from teaching it.
Pet Insurance Lifetime Value Calculator
Calculate pet insurance lifetime value vs total premiums paid, factoring in claim probability and your pet's expected lifespan.
Taxi vs Car Ownership Break-Even
Calculate break-even point between taxi/ride-sharing and car ownership. Enter car cost all-in to see break-even between car ownership and taxi/ride-sharing.
E-commerce & Marketplace
View all →Amazon FBA Profit Calculator
Calculate Amazon FBA net profit per unit after referral fee, fulfilment fee, storage cost, and product cost from your selling price.
App Store Fee Calculator
Work out app store commission on annual revenue, comparing the standard rate against the reduced small-business and subscription rates.
Average Order Value Calculator
Calculate average order value (AOV) by dividing total revenue by number of orders — a widely used ecommerce performance metric.
Dropshipping Profit Calculator
Calculate dropshipping profit per sale by entering supplier cost, platform fees, ad spend, and shipping to see margin and net profit.
eBay Fee Calculator
Work out eBay selling fees on any sale: final value fee, payment processing and the fixed per-order charge, plus net revenue and take rate.
eBay Profit Calculator
Work out eBay net profit per sale after final value fees, payment processing and the shipping gap — what actually lands in your account.
Import Business Profit Calculator
Calculate import profit from units imported, supplier price, shipping, customs duty, and your selling price into the local market.
Marketplace Commission Calculator
Calculate marketplace total fees from commission, payment processing, listing, and advertising percentages applied to the sale price.
Debt
View all →Amortisation Schedule Calculator
See how a standard amortising loan splits between principal and interest in year 1. Enter loan amount, annual rate, and term to see monthly payment too.
Annual Cost of Credit Calculator
Calculate total annual interest cost across all your debt balances and rates. Enter credit card balance and credit card APR to size total interest cost.
APR vs Flat Rate Comparison Calculator
Convert a flat-rate loan quote into an estimated APR-equivalent figure. See the estimate alongside the quoted flat rate, monthly payment, and total cost.
Auto Loan Comparison Calculator
Compare two auto loan offers on monthly payment and total interest, then see which one costs less across its full term at your loan size.
Auto Loan Lifetime Cost Calculator
Calculate total lifetime auto-loan cost across several cars and loan terms. Enter typical loan amount to see total principal + interest across the vehicles.
Auto Loan Payoff Calculator
Calculate auto loan payoff timeline with optional extra payments. See interest saved and total paid to map your payoff timeline.
Auto Loan Refinance Calculator
Compare an auto loan against a refinance quote over the same remaining term: both monthly payments, the difference, and the total saving or cost.
Balance Transfer Savings Calculator
Compare staying on a card vs a balance transfer with a real declining-balance simulation. See net interest saved, payoff months, and fee break-even.
Startup & VC
View all →Angel Investment Return Calculator
Calculate angel investment exit proceeds, MOIC, and IRR with dilution factored in, given initial investment and initial ownership percentage.
Business Exit Value Calculator
Estimate your business exit value using a blended revenue and profit multiple approach with an industry growth factor applied.
Business Idea Profitability Calculator
Calculate gross profit and break-even volume for a business idea from unit economics. Enter unit revenue to see per-unit profit and break-even volume.
Business Line of Credit Calculator
Calculate total business line of credit cost including interest on drawn balance and unused commitment fees on the undrawn portion.
Business Loan Calculator
Calculate business loan monthly repayment and the cumulative interest paid across the loan's full term at any rate and amortisation length.
Business Protection Calculator
Calculate business protection cover needed for key person from profit contribution, replacement time, recruitment, and loans.
Business Valuation Calculator
Estimate business valuation using both an earnings-multiple approach and a net-asset approach — the two numbers usually bracket the real range.
Convertible Note Calculator
Calculate convertible note conversion ownership at the next funding round from note size, valuation cap, and discount rate.
SaaS & Subscription
View all →Annual Recurring Revenue Growth Calculator
Calculate your annual recurring revenue growth rate year-over-year and track absolute ARR added — the core SaaS metric investors review first.
ARR Calculator
Calculate current ARR from monthly recurring revenue and project it forward at a monthly growth rate over a horizon you choose.
Payback Period Calculator
Calculate payback period in years and months by dividing your initial investment cost by steady annual cash inflows. No time value of money.
SaaS Revenue Calculator
Project subscription revenue from a current MRR and a monthly growth rate. See cumulative revenue, final-month MRR and the annual run rate.
Planning
View all →Annuity Payout Calculator — Income From a Lump Sum
Calculate the monthly income a lump sum pays over a fixed period. Enter a balance, rate, and term to see the payment, total paid, and interest.
Apprenticeship vs University Calculator
Compare lifetime earnings with our apprenticeship vs university calculator. Model net income across both routes based on salary, costs, and study years.
Buy vs Lease Car Calculator
Compare the total cost of buying a car outright against leasing across a matched ownership period. Enter buy price to see net cost of each path over the period.
Career Break Finances Calculator
Calculate total financial cost of a career break including lost salary, employer match, and expenses during time off. Free and educational.
Career Change Financial Impact Calculator
Weigh up the money side of changing careers. Compare salary before and after plus transition costs to see the net financial impact over your chosen horizon.
Children's Education Fund Calculator
Plan a children's education fund. Calculate target amount based on degree cost and monthly savings needed to reach it by the child's university age.
Coast FIRE Calculator
Calculate the Coast FIRE number: the minimum savings needed to compound into full FIRE without further contributions, given age and return assumption.
Expense Inflation Forecast Tool
Forecast monthly expense growth over 10-year period. Project future budget requirements for retirement planning and long-term financial planning.
Cloud & Tech
View all →App Development Cost Calculator
Estimate total app development cost from team hours, hourly rates, platform complexity, and a 15% project-management buffer.
CDN Cost Calculator
Calculate monthly CDN cost from data transferred, request volume, and storage at the per-GB price your provider charges.
Cloud Cost Calculator
Calculate cloud compute storage and bandwidth costs with reserved discount. Enter compute monthly to see cloud net monthly cost across compute and storage.
Cloud Migration ROI Calculator
Cloud migration ROI from running costs, one-off migration spend and productivity gains, with payback period and net value alongside.
Font Licensing Calculator
Calculate font licensing cost from font count, base licence, user count, and any web-use multipliers the foundry applies.
Kubernetes Cost Calculator
Calculate monthly Kubernetes cluster cost including worker nodes, control plane, and add-on services like ingress and monitoring.
Project Management Cost Calculator
Calculate project management tool total cost including licences and admin time. Enter users to see pm tool monthly cost from users and per-user cost.
Software Licensing Cost Calculator
Calculate total annual software licensing costs by combining base licence fees with support and upgrade percentages across all deployed licences.
Utilities
View all →Batch Cooking Savings Calculator
Calculate your batch cooking savings vs individual meals. Enter meal costs and weekly frequency to estimate your total annual food budget savings.
Cloud Storage Cost Calculator
Calculate total cloud storage cost per month and year across storage, egress, and API usage. Enter storage gb to see total monthly and annual cost.
Coffee Habit Annual Calculator
Calculate annual coffee spending and the long-term investment opportunity cost of buying a daily coffee instead of brewing it.
Currency Exchange Fee Calculator
Calculate true cost of currency exchange including the hidden FX spread that providers add over the mid-market rate, plus transfer fees.
Discount Calculator
Calculate final price after a percentage discount and see the indicative amount saved and implied multiplier for any sale or markdown.
Electricity Bill Estimator
Estimate your electricity bill from kWh usage and unit rate, with monthly totals, annual projection, and daily cost breakdown.
Markup Calculator
Calculate selling price from cost plus markup percentage, with the corresponding gross margin shown alongside for context.
Meal Planning Savings Calculator
See yearly savings from weekly meal planning — reduced grocery waste and fewer takeaway nights add up to a meaningful annual figure.
Green & Sustainable Finance
View all →Battery Storage ROI Calculator
Battery storage break-even year and lifetime return after the install cost is paid off through projected annual savings on bills.
Biomass Boiler ROI Calculator
Calculate biomass boiler ROI by comparing installation cost to annual fuel savings, with the resulting break-even year and lifetime saving.
Bulk Refill vs Individual Packaging
Compare long-term costs and environmental waste between bulk refill products and individual packaged versions with savings calculations.
Carbon Offset Calculator
Annual and lifetime cost of offsetting your CO2 emissions, based on volume, market price per tonne, and any reduction efforts you're already making.
Electric Bike ROI Calculator
Calculate e-bike ROI vs car or public transport — see the payback period from reduced commuting costs at your daily distance and frequency.
Electric Bike vs Car Calculator
Calculate e-bike payback from replacing car commuting and associated vehicle costs, with the annual car-cost offset broken out.
Energy Rating Improvement Cost Calculator
Calculate payback period and net benefit from energy efficiency improvements including bill reduction and property value uplift.
Ethical Shopping Premium Calculator
Calculate the annual premium spent on ethical shopping alternatives versus conventional pricing — see what 'shop your values' costs in your currency.
Money Insights
View all →Break-Even Age Calculator
Calculate break-even age when you hit a financial target. Enter net worth to see age you'll reach a target net worth given current net worth and annual savings.
Cost of Procrastinating Investing Calculator
Calculate the opportunity cost of delaying investing for years through compound growth lost on the contributions you didn't make.
Financial Age Calculator
Calculate financial age based on net worth relative to age-adjusted benchmark targets — how 'old' your finances look versus your actual age.
Financial Independence Age Calculator
Calculate projected age of financial independence from current savings and annual contribution rate at an assumed return.
Financial Life Simulator
Simulate your financial life across the decades, from income and spending to investing and retirement, to see how today's choices shape long-term wealth.
Financial Regret Cost Calculator
Calculate compound cost of past financial decisions at current value. Enter original amount and years ago to see opportunity cost and original amount.
Hidden Payslip Calculator
Calculate take-home pay after income tax, payroll tax, health insurance, and retirement deductions to reveal your hidden payslip percentage.
Impulse Buy Lifetime Cost Calculator
Calculate multi-decade cost of impulse buying including the investment opportunity cost of redirecting that spend into long-term assets.
Savings
View all →Bucket Retirement Strategy Calculator
Allocate retirement savings across three buckets — immediate cash, medium-term income, and long-term growth. Enter retirement pot to see each bucket's amount.
Bucket Strategy Calculator
Split a portfolio into near-term cash, medium-term bonds, and long-term growth buckets based on target allocations across each band.
Cash vs Invest Calculator
Compare long-term value of holding cash vs investing the same amount at expected market returns. Enter cash rate and investment return to see opportunity cost.
CD Calculator — Certificate of Deposit Growth
CD calculator for certificates of deposit. Enter principal, APY, and term to see maturity value, interest earned, and effective yield.
CD Early Withdrawal Penalty Calculator
Calculate CD early withdrawal penalty cost and net amount received. Enter CD principal and CD APY to see penalty amount and interest earned.
College Savings Calculator
Calculate required monthly savings for future college costs using inflation-adjusted tuition and investment growth projections.
Portfolio Drawdown Calculator
Calculate how long a portfolio will last at a specified annual withdrawal rate and expected return. Enter portfolio value to see years the portfolio sustains.
Education Savings Calculator
Work out the monthly saving needed to hit an education target. Enter the amount, the years, what you have saved and an expected return.
Psychology & Behavioral
View all →Cafe Weekly Compound Cost Calculator
Calculate the compounded future value of a weekly café spend if it had been invested instead — the long-tail cost of a small habit.
Charity Compound Impact Calculator
Calculate total lifetime charitable giving at a consistent monthly amount. Enter uplift and years to see total nominal lifetime giving.
Financial Health
View all →COBRA Insurance Calculator
Calculate total COBRA continuation health insurance cost after employment ends, given the previous employer's full monthly premium.
Credit Card Rewards Value Calculator
Calculate net annual value of credit card rewards after the annual fee. Enter spend and reward rate to see net rewards value.
Emergency Fund Calculator
Calculate emergency fund target and timeline to reach it from expenses and contributions. Enter months of coverage to see target amount and current gap.
Financial Stability Score
Score financial stability from 0 to 100 using income, expenses, savings and debt, with emergency fund cover carrying the most weight.
Income Shock Survival Simulator
Estimate how many months your savings would cover the gap if income fell. Enter savings, essential expenses and any income still arriving.
Index Fund vs Active Fund Calculator
Compare index fund vs active fund final wealth over a multi-decade horizon, accounting for the compounding effect of fee drag.
Net Worth by Age Calculator
Compare your net worth against an age-based benchmark built from income and current age, and see the gap in both currency and years of income.
Net Worth Calculator
Calculate your net worth. Sum savings, investments, and property minus mortgage and debts to see your financial position.
Inflation
View all →Cost of Living Crisis Calculator
Calculate cost-of-living crisis impact on monthly spend — extra annual cost plus the cumulative inflation burden across years.
Inflation Calculator
Calculate the future real value of money after inflation — see purchasing power lost across years at any inflation rate.
Lifestyle Inflation Detector
Quantify lifestyle inflation by tracking spending growth relative to income increases. Identify where additional earnings are allocated and spent.
Purchasing Power Calculator — Money's Value Over Time
See what a sum of money is worth in any past or future year as inflation changes its value. Compare buying power year by year on one timeline.
Real Wage Growth Calculator
Calculate real wage growth after inflation — see whether a nominal raise actually increases purchasing power against the cost-of-living rise.
Crypto
View all →Crypto Cost Basis Calculator
Calculate crypto cost basis per coin from purchase amount and transaction fees. Enter coins purchased and amount paid to find your per-coin cost basis.
Crypto Investment Calculator
Crypto investment calculator. Enter amount, expected annual return, and years to see projected value and total return on your crypto position.
Crypto Portfolio Calculator
Crypto portfolio calculator. Enter quantities and prices across multiple coins to see total value, allocation percentages, and concentration risk.
Crypto Profit Calculator
Calculate crypto profit or loss after fees. Net gain, ROI percentage, and total fee drag. Enter units owned and buy price to see net gain after fees.
Mining Rig ROI Calculator
Calculate crypto mining rig payback period and net profit. Enter rig cost, hashrate and revenue per TH to see the days until the rig pays for itself.
Stablecoin Yield Calculator
Stablecoin yield calculator. Project yield on USDC, USDT, or DAI holdings at user-supplied APY — fiat-denominated math without crypto price volatility.
Marketing & Growth
View all →Funnel Conversion Calculator
Calculate sales funnel conversion and expected revenue through stages from top-of-funnel visitors and per-stage conversion rates.
Penetration Pricing Calculator
Calculate penetration pricing: entry price, total subsidy cost, and projected market share across your full penetration phase instantly.
PR Value Calculator
Calculate PR campaign value from media impressions, CPM equivalent rates, and the additional value of tier-1 publication mentions.
Price Sensitivity Calculator
Calculate price sensitivity with this price elasticity of demand calculator. Input old and new prices and volumes to get an elasticity coefficient.
B2B Insurance
View all →Long-Term Care Cost Calculator
Calculate long-term care costs with inflation projection. Enter years of care and care cost inflation to size cover needed.
Product Liability Calculator
Estimate product liability exposure from units sold, defect rate, claim value and recall probability, and see the cover level the model implies.
Professional Indemnity Calculator
Calculate professional indemnity insurance cover from fee income, largest contract, and claims history to project annual premium cost.
Public Liability Insurance Calculator
Estimate an annual public liability insurance premium from your turnover, the cover limit you need, and a low, medium or high risk factor.
Trade Credit Insurance Calculator
Calculate trade credit insurance annual premium from credit sales, premium rate, deductible, and max claim. Free educational tool.
Modern Life Events
View all →School Fees Lifetime Cost Calculator
Calculate total private school fees across years with annual fee inflation. Enter years of schooling to see total nominal fees over the period.
Wedding Insurance Calculator
Calculate wedding insurance expected value. Enter budget, cancellation probability, and premium to see if it pays. Free — no signup.
Transparency
Every result is math you can retrace. The formula, its variables, the sources, and a worked example sit on every tool page.
Scope
459 calculators across 29 categories. 45 currencies. No signup, no fluff, and no data leaves your browser.
Execution // what you get
Verified math
Each formula is tested against a known expected result.
Global by default
45 currencies with locale-aware number formatting.
Private by design
Calculations run in your browser. Nothing is uploaded.
Educational framing
Tools illustrate and estimate. They do not advise.
Start
Precision you can retrace.
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