TradingPerformanceTools

Trading Statistics Calculator

Turn wins, losses and average sizes into win rate, profit factor, payoff ratio, expectancy and the break-even win rate.

Last reviewed

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Free · No sign-up · Runs in your browser

Four numbers describe a trading record almost completely: how many trades won, how many lost, what the average winner made and what the average loser cost. Everything else worth knowing is derived from those.

This calculator derives them - win rate, profit factor, payoff ratio, expectancy per trade and the win rate the payoff ratio requires to break even. The last two are the ones that decide whether a strategy is worth trading, and neither is the one traders usually quote.

Your numbers

Results update as you type. Nothing is sent anywhere.

Result

Expectancy per trade

$115

Win rate
38%
Profit factor
1.66:1
Payoff ratio
2.71:1
Break-even win rate
26.95%
Net profit
$11,500
Gross profit
$31,920
Gross loss
$19,220
Total fees
$1,200
Total trades
100
Expectancy per 100 trades
$11,500
Assessment
Positive expectancy on this sample

This tool is for informational and educational purposes only. It is not financial or investment advice, and past performance does not guarantee future results.

Profit factor above 1.0 means gross wins exceed gross losses. Expectancy tells you what an average trade is worth, which is the number that compounds.

A sample of fewer than roughly one hundred trades tells you very little. Treat short-run statistics as provisional.

How to use the trading statistics calculator

  1. Enter the number of winning and losing trades from your record.
  2. Enter the average win and the average loss as positive numbers.
  3. Add the average fees per trade so expectancy is net.
  4. Compare the win rate against the break-even win rate.

What people use this for

  • Establishing whether a record has a positive expectancy.
  • Comparing two strategies with very different win rates.
  • Finding the win rate a payoff ratio requires.
  • Seeing what fees do to a strategy with small average wins.

Worked examples

Every figure below is produced by running this calculator against the example inputs, so the numbers always match the tool.

A low win rate with large winners

38 wins, 62 losses, $840 average win, $310 average loss, $12 fees.

Expectancy per trade
$115
Profit factor
1.66:1
Break-even win rate
26.95%

A high win rate with large losers

78 wins, 22 losses, $120 average win, $560 average loss.

Expectancy per trade
-$42
Win rate
78%
Assessment
Negative expectancy on this sample

Expectancy is the figure that compounds

Expectancy is what an average trade is worth: the win rate multiplied by the average win, minus the loss rate multiplied by the average loss, minus costs. Positive and the account grows over enough trades; negative and it does not, whatever any individual month looked like.

It is also the number to improve. Raising expectancy by twenty dollars a trade across four hundred trades a year is worth more than most changes traders spend their time on.

The two examples are the whole lesson

A thirty-eight percent win rate can be highly profitable and a seventy-eight percent win rate can lose money. That is not a curiosity - it is the most common way otherwise competent traders end up with a losing record.

A high win rate is easy to achieve by taking profits early and letting losses run. It feels good, it produces an impressive-looking statistic, and it destroys expectancy.

Sample size, again

These statistics are only as good as the record behind them. Under about a hundred trades, the win rate and the average sizes are unstable enough that the expectancy figure can flip sign on a handful of additional trades.

Calculate them anyway, but treat a short record as a provisional reading rather than a measurement.

Methodology and assumptions

What this calculator does, and what it deliberately does not do.

  • Results are arithmetic on the numbers you enter. Nothing here predicts prices or connects to an exchange, broker or market data feed.
  • Nothing you type is transmitted or stored - the calculation runs entirely inside your browser.

This tool is for informational and educational purposes only and does not constitute financial or investment advice. Past performance does not guarantee future results.

Nothing on this website is a recommendation to buy, sell or hold any security, currency, derivative or digital asset. No price is predicted and no return is promised or implied.

Trading and investing carry the risk of substantial loss, including the loss of your entire capital. Leveraged products can produce losses that exceed your deposit. Tax treatment depends on your jurisdiction and your circumstances.

Frequently asked questions

What profit factor is good?

This site does not suggest a threshold. Above 1.0 means gross wins exceeded gross losses; how far above is meaningful depends on the strategy, the sample and the drawdowns involved.

Should I include fees?

Yes. On strategies with small average wins, fees are a substantial share of expectancy and excluding them makes a losing strategy look profitable.

What is the break-even win rate?

The win rate at which expectancy is zero, given your payoff ratio. Below it the strategy loses no matter how good it feels.

Is this financial advice?

No. It is arithmetic on your own trading record, for informational and educational purposes only.

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