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Performance

Drawdown Calculator

Peak-to-trough decline, and the gain required to climb back out of it.

Inputs it asks for
Number of trades count
Win rate %
Average win R or currency
Average loss R or currency
Formula shown · assumptions disclosed

What it computes

Peak-to-trough decline, and the gain required to climb back out of it. The page states the equation, the units it expects and the rounding it applies, so the result can be reproduced by hand.

Where it sits in the chain

A calculator gives you a number. This one feeds the next: account to risk, risk to position size, position size to the trade, and the trade to expectancy, drawdown and risk of ruin.

See the performance tools →

Not live yet

This calculator is specified but not wired up in this build. The Position Size Calculator is the working template it will follow: inputs, live result, formula, worked example, assumptions and FAQs on one page.

Open the working example →

Method

Costs, slippage and non-USD conversion are handled by their own calculators rather than folded in silently here.

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Expectancy Calculator

Average outcome per trade from win rate and average win and loss. The number win rate hides.

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Win Rate Calculator

Your hit rate, and the rate a given risk/reward needs before it earns anything.

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Risk of Ruin Calculator

The probability that a losing run takes out a defined share of the account.

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Kelly Criterion Calculator

The growth-optimal fraction, and the reason most traders size well below it.

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Quantify the trade, then keep the record.