# Profit Factor

> Profit factor is gross profit divided by gross loss. Learn what it means, what a good profit factor is, and how it compares to win rate and expectancy.

Canonical: https://www.journalx.io/glossary/profit-factor

**Profit factor** is one of the fastest ways to judge a trading strategy: it is the total money your winners made divided by the total money your losers lost. A profit factor of 2.0 means you earned two dollars for every dollar you gave back. Anything above 1.0 is net profitable, anything below 1.0 loses money, and the higher the number, the more cushion your wins give you over your losses.

## How Profit Factor Works

The formula is simple:

> Profit Factor = Gross Profit ÷ Gross Loss

Gross profit is the sum of all your winning trades. Gross loss is the sum of all your losing trades, taken as a positive number. Say your winners added up to $8,000 and your losers to $5,000. Your profit factor is $8,000 ÷ $5,000 = 1.6. For every dollar lost, you made $1.60.

Because it works from totals, profit factor does not care how you got there. A high [win rate](/glossary/win-rate) with small edges and a low win rate with big winners can produce the same profit factor. That is what makes it a clean, single-number health check on a strategy.

## What Is a Good Profit Factor

As a rough guide:

| Profit factor | What it suggests                                 |
| ------------- | ------------------------------------------------ |
| Below 1.0     | The strategy loses money                         |
| 1.0 to 1.3    | Marginal; easily erased by costs or a bad streak |
| 1.3 to 1.6    | A workable, tradable edge                        |
| 1.6 to 2.0    | Strong                                           |
| Above 2.0     | Excellent, but check the sample size             |

Be skeptical of very high numbers. A profit factor of 4 over twenty trades usually means one big winner is doing all the work, not that you have found a money machine. A profit factor near 2.0 that holds across hundreds of trades is far more trustworthy than a huge number from a small sample.

## When to Use Profit Factor

Reach for profit factor when you want a quick read on whether a strategy, or a slice of your history, is worth keeping:

- **Screening setups.** Filter your journal to one setup and check its profit factor before you commit more size to it.
- **Comparing time periods.** Watch whether this month's profit factor is holding up against your baseline.
- **Pairing it with other metrics.** Profit factor tells you the ratio of wins to losses, [expectancy](/glossary/expectancy) tells you the average result per trade, and [maximum drawdown](/glossary/drawdown) tells you the worst stretch. Read them together, not alone.

## Key Takeaways

- Profit factor is gross profit divided by gross loss; above 1.0 is profitable, below 1.0 loses money.
- A profit factor of 1.5 to 2.0 over a large sample is generally considered a strong, durable edge.
- It ignores how many trades won or lost, so always read it next to win rate and expectancy.
- A very high profit factor on few trades is usually one outlier winner, not a real edge.

## Common Mistakes

The biggest mistake is judging profit factor on a tiny sample, where a single outsized win or loss swings it wildly. The second is reading it in isolation: a 1.8 profit factor with a 20% drawdown feels very different from a 1.8 with a 5% drawdown, even though the ratio is identical. The third is forgetting that profit factor is backward-looking. It describes what already happened, and it is only as stable as the strategy behind it.

## How JournalX Tracks Profit Factor

JournalX computes profit factor automatically from your trade history and recalculates it for any filtered view. Slice to a single setup, symbol, session, or account, and you see the profit factor for exactly that slice, next to expectancy, win rate, and drawdown. It turns one summary number into a tool for finding which parts of your trading actually carry the account.