Profit Factor Calculator
Calculate profit factor from a signed outcome ledger or an already reconciled gross-profit and gross-loss summary. Every result states the entered cost basis and reconciles net result with expectancy; it never grades a strategy or predicts future performance.
Declare the input and cost basis
Choose one mode and keep every amount in the selected display currency.
Ledger mode derives all totals. Summary mode uses entered gross totals and a realized trade count.
This declaration labels the result. The calculator cannot inspect which costs are present.
One amount per non-blank row. Positive is profitable, negative is losing and zero is flat.
Positive total from realized winning records.
Enter the loss total as a positive magnitude.
Required to reconcile net result with expectancy per trade.
Reconciled realized summary
Observed Trade Profit Factor 2.0.0.
Summary mode cannot recover positive, negative or flat trade counts from aggregate totals, so those counts remain explicitly unavailable.
How profit factor, net result and expectancy reconcile
Net result equals gross profit minus gross loss magnitude. Expectancy equals that net result divided by the realized trade count. Ledger mode derives the gross totals and counts from signed rows; summary mode accepts the two gross totals and trade count directly. Both modes retain full precision until display and attach the selected cost-basis declaration without pretending to inspect the records.
Worked example from the audited fixture
For signed realized outcomes of $400, −$200, $150, −$100 and $50, gross profit is $600 and gross loss magnitude is $300. Profit factor is 600 ÷ 300 = 2.000; net result is $600 − $300 = $300; and expectancy is $300 ÷ 5 = $60 per realized trade. Entering the same $600, $300 and five-trade totals in summary mode produces the same three values.
How to interpret the result
A 2.000 profit factor means gross positive outcomes in this entered sample were twice its gross losses on the declared record basis. It does not show when losses occurred, the drawdown path, whether records or costs are missing, or whether the ratio will persist. If gross loss is zero, this page reports profit factor as unavailable rather than displaying infinity.
Assumptions and limits
- Every row or aggregate must use one currency and one consistent realization and cost basis.
- Summary mode cannot reconstruct positive, negative or flat trade counts from gross totals.
- Open positions, omitted costs and incomplete records can materially change every result.
- Order, path, drawdown, sample uncertainty and changing market conditions are not modeled.
- A larger ratio is not automatically safer, more robust or suitable.
- No result is a forecast, verified edge, strategy grade or recommendation.
Frequently asked questions
- It compares gross positive realized outcomes with the magnitude of gross realized losses in the entered sample.
- Use signed ledger mode when you have one realized outcome per trade. Use gross summary mode when you already have gross profit, gross loss magnitude and the realized trade count on one basis.
- The numeric ratio is shown as undefined because gross loss is zero. Other descriptive totals remain available.
- Ledger mode retains zero rows in the trade count and expectancy denominator, but they add nothing to gross profit or gross loss. Summary mode cannot recover flat counts.
- It records whether the entered figures are after included costs, before trading costs or on another consistent basis. It does not deduct costs or verify record completeness.
- The calculator subtracts gross loss magnitude from gross profit, then divides that net result by the entered or derived realized trade count.
- No. Profit factor is a gross-profit-to-gross-loss ratio. Expectancy is the average outcome per trade.
- No. It describes only the entered realized sample and contains no future-performance model.
Sources and methodology
- Fidelity — Strategy-testing glossary — defines profit factor as gross profit divided by gross loss and distinguishes gross, net and per-trade results.
- TradingView — Profit factor — documents the gross-profit-to-gross-loss calculation using realized figures.
- CFTC — Trading system claims advisory — cautions against unsupported performance claims.
Continue the performance review
Verify realized account records
Confirm statement currency, realized status and included charges before assembling the sample.
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