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Win Rate Calculator

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

Inputs it asks for
Winning trades value
Losing trades value
Break-even trades value
Formula shown · assumptions disclosed

What it computes

Your hit rate, and the rate a given risk/reward needs before it earns anything. 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 →
Inputs
Result
Win rate 41.0%
Excluding break-evens 41.0%
Sample size 200
95% interval 34.2% to 47.8%
Win rate alone does not say whether a strategy earns. Pair it with the payoff ratio.
Save this result to your dashboard. Save

The formula

win rate = wins ÷ (wins + losses + break-evens)
95% CI = rate ± 1.96 × √(p(1−p) ÷ n)

The interval is the important half. A win rate without a sample size cannot distinguish a good strategy from a lucky one.

Worked example

82 wins and 118 losses:

rate = 82 ÷ 200 = 41.0%
SE = √(0.41 × 0.59 ÷ 200) = 3.48%
95% = 41.0 ± 6.8 = 34.2% to 47.8%

Two hundred trades, and the true rate is somewhere in a 14-point band. At twenty trades that band is over 40 points wide.

What it assumes

  • Trades are independent. Clustered wins and losses widen the real interval beyond this formula.
  • The normal approximation is poor at very small samples or rates near 0% and 100%.

Common questions

How many trades do I need before my win rate means anything?

Several hundred. At 100 trades the 95% interval on a 50% rate is roughly 40% to 60% — wide enough to contain both a winning and a losing strategy.

Should break-even trades count?

Include them in the denominator if you want the rate you actually experience. Excluding them raises the figure and is the more common convention, so state which you used.

Is a 50% win rate good?

It is neither. Paired with a 1:2 payoff it is a strong strategy; paired with a 1:0.5 payoff it loses steadily. The win rate is only half of the pair.

What to work out next

A calculator answers one question and raises the next. These are the ones this figure feeds into.

Expectancy Calculator

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

Break-even Calculator

The move required to cover spread, commission and financing before anything is profit.

Risk/Reward Calculator

Compare reward with risk, and read off the win rate that ratio needs to break even.

Win Rate Calculator · rounding shown to the precision displayed

More in performance

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Drawdown Calculator

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

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Risk of Ruin Calculator

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

Open →
Kelly Criterion Calculator

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

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Compounding Calculator

How a fixed monthly return compounds an account balance over time.

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Quantify the trade, then keep the record.