Major Purchases Calculators

3D Printer ROI Calculator

Calculate ROI on a 3D printer from purchase price, filament cost, and equivalent retail savings per print. Enter printer cost to see payback months.

Air Fryer vs Oven Calculator

Work out the energy-cost payback period for an air fryer vs a conventional oven. Enter air fryer price and oven energy per meal for an instant result.

Air Purifier Worth It Calculator

Calculate annual cost of operating an air purifier including purchase amortised, filters, and electricity. Enter purchase price to see total annual cost.

Allotment vs Supermarket ROI Calculator

Calculate whether your allotment rent plus costs produces enough equivalent value to beat supermarket produce. Honest ROI including time.

Annual True Cost of a Car Calculator

Calculate the total annual cost of owning a car including depreciation, fuel, insurance, tax, and maintenance. Free and runs in your browser.

Bathroom Renovation Cost Calculator

Calculate realistic bathroom renovation cost including materials, fittings, labour, plumbing, and contingency for unexpected extras.

Biweekly Auto Payment Calculator

Calculate interest savings from biweekly versus monthly auto loan payment schedule. Enter loan amount and interest rate for an instant result.

Boat Ownership Cost Calculator

Calculate boat ownership annual and lifetime cost. Runs in your browser with a transparent formula — free and no signup.

Boiler Replacement Savings Calculator

Calculate annual savings and payback from replacing an old inefficient boiler. Enter annual gas bill and efficiency gain for an instant result.

Car Depreciation Calculator

Calculate car depreciation over time. Enter purchase price, annual rate, and years to see remaining value and total lost.

Car Insurance Calculator

Calculate total expected car insurance annual cost including premiums and expected claims. Enter liability premium monthly and see the result instantly.

Car Loan vs Cash Calculator

Compare car loan vs cash purchase cost including investment opportunity cost on the cash. Enter car price and down payment for an instant result.

Car Rebate vs Financing Calculator

Compare cash rebate vs promotional APR financing on car purchases for total cost. Enter car price and rebate amount for an instant result.

Car Running Cost Calculator

Calculate true annual car running cost. Sum insurance, fuel, maintenance, tax, MOT, and depreciation to see real cost of ownership.

Caravan vs Hotel Holiday Calculator

Compare lifetime cost of caravan ownership versus hotel-based holidays. Enter caravan cost and maintenance to see lifetime savings and caravan total.

Coffee Machine Payback Calculator

Calculate the payback period of a home espresso or coffee machine vs buying coffee at a café. Enter machine price and café price per cup for an instant result.

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.

Dishwasher Purchase Calculator

Calculate dishwasher payback period including water savings and time recovered. Enter dishwasher cost and time savings for an instant result.

Double Glazing ROI Calculator

Calculate double glazing payback time and lifetime net benefit including property value uplift from installation cost and heating savings.

E-Bike Purchase Calculator

Estimate the payback period of an e-bike for commuting vs a car or public transport. Enter e-bike price and one-way commute miles for an instant result.

Electric Car vs Petrol Calculator

Compare electric vs petrol car total cost. Enter prices, mileage, fuel and electricity costs to see break-even and annual savings.

Electric Scooter Payback Calculator

Calculate months until an electric scooter pays back in saved public transport or fuel costs. See net savings over scooter lifetime.

Electric Scooter vs Bus Calculator

Calculate the break-even point for buying an electric scooter instead of paying daily bus fares. Enter scooter price and see the result instantly.

Energy Saving Upgrade ROI Calculator

Calculate ROI on home energy-saving upgrades based on cost and annual savings. Enter upgrade cost to see payback and 20-year roi.

EV Charging Cost Calculator

Calculate annual EV charging cost split between home and public charging. Enter miles and ev efficiency to see annual charging cost and home cost.

Exercise Bike ROI Calculator

Calculate ROI of buying an exercise bike vs gym membership. See payback period and total savings over the bike's useful life.

Extended Warranty Calculator

Calculate if an extended warranty is worth it. Enter warranty cost, expected repair, and probability to see expected value.

Extension vs Moving Calculator

Compare the total cost of extending a home against moving to a bigger property. Enter home value to see which option costs less and absolute saving.

Freezer vs Fresh Food Calculator

Calculate separate freezer payback from bulk buying savings net of electricity running costs. Enter freezer cost to see payback period and annual.

Gaming PC vs Console Calculator

Compare gaming PC vs console annual cost including hardware and game purchase costs. Enter gaming pc cost and console cost for an instant result.

Garden vs Balcony Growing Cost Calculator

Calculate the cost of growing food at home vs buying supermarket produce. Factor setup, seeds, time, and realistic yield to see if home growing saves money.

Heat Pump Purchase Calculator

Payback calculator for a heat pump vs gas boiler using install cost plus running cost savings. Enter heat pump installed cost and see the result instantly.

Home Gym Build Cost Calculator

Calculate home gym build cost and years to pay back vs commercial gym membership. Enter equipment cost and maintenance to see payback years vs membership.

Home Improvement ROI Estimator

Calculate return on investment for home renovation projects. Compare resale value gains across different improvement types to identify highest-ROI upgrades.

Home Insurance Calculator

Calculate total expected home insurance annual cost including premium and claim allowance. Enter home value and deductible for an instant result.

Home Office Setup Cost Calculator

Calculate total home office setup cost across desk, chair, monitors, and extras. Shows total setup cost from the values you enter.

Home Renovation Cost Calculator

Calculate total home renovation cost including materials, labour, permits, and contingency reserve. Enter permits & inspections and see the result instantly.

Home Renovation Lifetime Cost Calculator

Calculate lifetime cost of periodic home renovations based on frequency and typical spend. Enter typical renovation cost to see lifetime total.

Home Security System ROI Calculator

Calculate home security system ROI including insurance discount and burglary risk reduction value. Enter system cost and monitoring for an instant result.

Hot Tub Running Cost Calculator

Calculate total lifetime cost of hot tub including purchase and ongoing running costs. Enter purchase cost and electricity for an instant result.

Keep or Sell Car Calculator

Compare total cost of keeping versus selling vehicle. Analyze depreciation, maintenance expenses, and repair costs for ownership decision.

Kitchen Renovation Cost Calculator

Calculate realistic kitchen renovation cost including units, worktops, appliances, flooring, plumbing, and trades with contingency buffer.

Laptop Repair vs Replace Calculator

Compare repair cost to replacement cost on a broken laptop. Factor remaining useful life to see which is economically better.

Laptop vs Desktop Calculator

Compare annual cost of laptop versus desktop including portability value adjustment. Enter laptop cost and desktop cost for an instant result.

Lease Break-Even Mileage Calculator

Find the mileage level at which leasing a car costs the same as owning it over 3 years. Enter lease cost and equivalent monthly ownership for an instant result.

Lease vs Buy Calculator

Compare lease vs buy total cost with resale value. Enter lease monthly payment and buy price to see net cost of each option.

Lease vs Buy Equipment Calculator

Compare total cost of leasing equipment vs buying outright. Factor monthly lease, upfront purchase, and expected useful life over the same period.

Loft Conversion ROI Calculator

Calculate loft conversion ROI from cost, property value uplift, and optional rental income contribution over ownership period.

Mattress Replacement Cost Calculator

Calculate the true per-year and per-night cost of a mattress based on purchase price and expected lifespan. Compare premium to mid-range by real cost.

Motorcycle vs Car Cost Calculator

Compare total cost of ownership between motorcycle and car over multi-year period including fuel and insurance. Instant result, no signup.

Motorhome vs Holiday Calculator

Compare total cost of motorhome ownership versus equivalent holidays over multi-year period. Enter motorhome purchase and running costs for an instant result.

New Boiler Cost Calculator

Payback calculator for replacing an old gas boiler with a new higher-efficiency model. Enter new boiler price and installation cost for an instant result.

New Phone Every Year Cost Calculator

Calculate the cost difference between upgrading phones annually vs holding them 3+ years. See 10-year difference including opportunity cost.

New vs Used Car Calculator

Compare 5-year total cost of a new car vs a used car including depreciation and maintenance. Enter new car price and see the result instantly.

Noise Cancelling Headphones ROI Calculator

Calculate payback period on premium noise-cancelling headphones from daily focus time gained. Enter headphone cost to see payback months.

Phone Upgrade True Cost Calculator

Compare contract phone upgrade total cost vs SIM-only plus separate handset purchase. Enter contract monthly price and contract length for an instant result.

Home Printer vs Print Shop Calculator

Compare cost of owning a home printer vs using a print shop. Factor printer price, ink costs, and annual print volume to find break-even point.

Real Car Cost & Depreciation Calculator

Calculate true total cost of car ownership including depreciation, insurance, fuel, maintenance, registration, and financing costs over time.

Rent vs Buy Calculator

Compare renting versus buying housing costs for any time period. Analyze total expenses, equity buildup, and financial outcomes.

Resale Value Decay Curve

Visualize vehicle depreciation curves and resale value decline over time. Identify periods of steepest value loss for specific vehicles.

Robot Vacuum Worth It Calculator

Calculate robot vacuum payback period from time saved on weekly vacuuming. Enter robot vacuum cost and weekly time saved for an instant result.

Second Car True Cost Calculator

Calculate total 10-year cost of keeping a second household car including all expenses. Enter purchase price to see total true cost and purchase price.

Smart Meter Savings Calculator

Calculate smart meter savings from behavior-driven energy reduction over multi-year periods. Enter annual bill to see total savings and annual savings.

Smart TV Worth It Calculator

Calculate smart TV lifetime net benefit from cable cord-cutting and streaming savings. Enter smart tv cost and cable savings for an instant result.

Smart vs Standard Appliance Calculator

Compare smart vs standard appliance purchase and ongoing costs. Factor subscription fees and realistic feature usage to see if premium pays back.

Sofa Cost per Use Calculator

Calculate cost per use of a sofa over its expected life and typical daily hours of use. Enter sofa price and years for an instant result.

Solar Panel Payback Calculator

Calculate solar panel payback period and lifetime return from cost and annual savings. Enter system cost and energy savings for an instant result.

Standing Desk ROI Calculator

Calculate standing desk ROI including productivity gains and estimated health-related savings. Enter desk cost to see payback period.

Treadmill vs Gym Membership Calculator

Compare treadmill purchase versus gym membership over multi-year period with break-even analysis. Enter treadmill cost and see the result instantly.

True Cost of Car Ownership Calculator

Calculate the true all-in annual cost of running a car: depreciation, fuel, insurance, tax, and servicing. Enter purchase price and see the result instantly.

TV vs Projector Cost Calculator

Compare total cost of a large TV vs projector including upfront price, bulb replacements, electricity, and screen/setup costs over 5 years.

Upgrade Cycle Cost Calculator

Calculate the lifetime cost of regular upgrades vs keeping the current device or car for longer. Enter purchase cost and cycle years for an instant result.

Van vs Car for Business Calculator

Compare van vs car for business ownership cost over years. Enter van purchase price and car purchase price for an instant result.

Washing Machine vs Laundromat Calculator

Compare lifetime cost between owning a washing machine and using laundromats. Enter washer cost and washer lifespan to see lifetime savings and annual loads.

Water Softener ROI Calculator

Calculate water softener ROI from reduced detergent use, longer appliance life, and better cleaning. See years to break-even on purchase.