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FinToolSuite
Updated April 20, 2026 · Crypto · Educational use only ·

Crypto Dollar Cost Average Calculator

DCA outcome into crypto across price volatility.

Calculate dollar cost averaging outcome in crypto across start and end prices. Enter amount and months to see final value and average cost per unit.

What this tool does

This calculator models the outcome of investing a fixed amount in crypto at regular intervals across a period of price movement. It takes your monthly investment amount, the number of months you plan to invest, and the starting and ending prices of the asset, then estimates your final portfolio value and the average cost per unit you would have paid across the entire period. The result illustrates how regular purchases at different price points affect your overall entry price and total holdings. The calculation assumes a linear price path between the start and end prices and does not account for trading fees, taxes, or price movements beyond the specified range. This tool is useful for understanding how consistent investing patterns interact with price volatility, though actual outcomes depend on real market conditions and your specific circumstances.


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Disclaimer

Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.

200/month for 24 months into crypto from 30,000 to 45,000: 24 monthly buys at linearly-interpolated prices — total invested 4,800, average cost 36,000 per unit, final holding value 6,000 at end price. DCA smooths volatility — no single-point risk.

Quick example

With monthly amount of 200 and months of 24 (plus start price of 30,000 and end price of 45,000), the result is 5,845.72. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.

Which inputs matter most

You enter Monthly Amount, Months, Start Price, and End Price.

What's happening under the hood

Monthly DCA simulation with linear price path. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.

Where this fits in planning

This is a "what-if" tool, not a forecast. Use it to test ideas before committing: what happens if the rate is 2% lower than hoped, what happens if you add five more years. The value is in the scenarios you run, not the single answer you get from the defaults.

What this doesn't capture

Steady-rate math ignores real-world volatility. Actual returns are lumpy; sequence-of-returns risk matters most in drawdown; fees and taxes drag on compound growth; and behaviour changes in drawdowns can reduce outcomes below the projection. The number represents one scenario rather than a forecast.

Where to go next

This calculation rarely sits alone in a planning exercise. If you're running these numbers, you'll probably also want the dca vs lump sum calculator, the lump sum vs monthly investing calculator, and the dollar cost averaging simulator — each one answers a different question in the same territory. Treating them as a set rather than in isolation usually produces a more honest picture.

Example Scenario

Investing £200 monthly for 24 months from £30,000 to £45,000 results in 5,845.72.

Inputs

Monthly Amount:£200
Months:24
Start Price:£30,000
End Price:£45,000
Expected Result5,845.72

This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.

Sources & Methodology

Methodology

The calculator models a dollar-cost averaging strategy by dividing your total investment period into monthly intervals. Each month, it purchases a fixed amount of the asset at a price determined by linear interpolation between the starting and ending prices you provide. This interpolation assumes the asset price moves in a straight line from start to end across the entire timeframe. The total number of units acquired is the sum of monthly purchases divided by their respective monthly prices. Final portfolio value is computed by multiplying total units held by the end price. The model assumes constant monthly investment amounts, does not account for trading fees or spreads, and treats price movement as entirely predictable and linear. Actual outcomes will differ due to real-world price volatility, transaction costs, and market conditions.

Frequently Asked Questions

Linear path realistic?
No — simplification. Real crypto volatile. DCA tends to reduce average cost below naive midpoint when volatility present.
DCA vs lump sum?
Lump sum wins in bull markets (2/3 of time historically). DCA wins in falling/volatile markets and reduces regret risk.
Tax implications?
Every buy creates a tax lot. 24 lots at 24 different prices. Careful CGT tracking critical when selling.
Frequency matters?
Weekly vs monthly rarely material. Monthly aligns with salary, automates easily. Weekly finer but more admin.

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