What Is Profit Factor?
Profit factor is gross profit divided by gross loss. Above 1.0 means a strategy made more on winners than it lost on losers; a definition, formula, and interpretation guide.
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In short. Profit factor is gross profit divided by gross loss over a set of trades. A profit factor of 1.0 means a strategy breaks even before costs; above 1.0 means it made more on winners than it lost on losers, and below 1.0 means the opposite. It is one of the few single numbers that captures both win rate and average trade size at once.
The formula
Profit factor equals total gross profit divided by total gross loss, using absolute values for both. A strategy with 6,000 in total winning trades and 4,000 in total losing trades has a profit factor of 6,000 divided by 4,000, which is 1.5. The same strategy with only 3,000 in total winners against the same 4,000 in losses would have a profit factor of 0.75, meaning it lost money overall despite whatever its win rate happened to be.
Unlike win rate, profit factor already accounts for the size of wins and losses, not just how often each occurred, which is why two strategies with very different win rates can still land on the same profit factor.
What counts as a good profit factor
Interpretation ranges vary slightly by source, but the general bands used across trading education are consistent: below 1.0 means a strategy is losing money, 1.0 to 1.5 is marginally profitable and can be fragile to a run of costs or slippage, 1.5 to 2.0 is generally considered solid, and above 2.0 is strong, according to Babypips' Forexpedia glossary. A very high profit factor from a small number of trades is less reliable than a moderate one sustained across a large sample, since a single outsized winning trade can inflate the ratio temporarily.
Important. Profit factor is typically calculated before trading costs such as spreads, commissions, and swap fees, unless a specific platform or journal states otherwise. A strategy with a profit factor of 1.1 can turn unprofitable once realistic costs are subtracted, so the raw ratio should not be read as a final verdict on its own.
Profit factor vs. related metrics
| Metric | What it measures | Blind spot |
|---|---|---|
| Win rate | Percentage of trades that were profitable | Ignores the size of wins vs losses |
| Profit factor | Gross profit relative to gross loss | Can look inflated from one large outlier trade |
| Expectancy (R-multiple) | Average result per trade relative to risk taken | Requires consistent risk sizing to stay meaningful |
Profit factor and expectancy answer related but distinct questions: profit factor summarizes the ratio of total gains to total losses across a whole track record, while expectancy expresses the average outcome of a single trade relative to what was risked on it. A strategy review that only checks one of the two can miss a problem the other would catch, such as a healthy profit factor built on inconsistent position sizing that would show up as an unstable expectancy per trade.
Calculating it from your own trading history
Profit factor requires summing every winning trade and every losing trade separately across a period, which is straightforward with a handful of trades but becomes error-prone done manually across months of activity. A trading journal that logs every closed trade can calculate profit factor automatically and update it as new trades close, making it possible to watch the number trend over time rather than recalculating it periodically from a spreadsheet.
This article is for educational purposes only and is not financial or investment advice. Profit factor and other historical performance metrics do not guarantee future results.
Calculate profit factor automatically from your trade history in the BitStat trading journal.
Frequently asked questions
What is the formula for profit factor?
What is considered a good profit factor?
Does profit factor include trading costs?
How is profit factor different from expectancy?
BitStat Team
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A prop firm challenge is a paid trading evaluation with a profit target and strict loss limits. See the typical two-phase structure, real FTMO rule examples, and what changes after you pass.
What Is Expectancy in Trading?
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