Win Rate Calculator
Calculate your win rate, loss rate and how it compares to what your strategy needs.
Please note: Trading carries substantial risk of loss. These calculators are planning tools, not trading advice, and no position sizing method prevents losses.
What the Win Rate Calculator does
Win rate is the share of trades that end in profit. On its own it is close to meaningless: a 90% win rate loses money if the occasional loss is ten times the average win. Pair it with your risk/reward ratio to see whether the combination is actually profitable.
Formula
Win rate = Wins ÷ Total trades × 100Break-even win rate = 1 ÷ (1 + Risk/reward) × 100Expectancy (R) = Win rate × Ratio − Loss rate
Inputs explained
| Input | Unit | Required | Notes |
|---|---|---|---|
| Winning trades | number | Yes | Accepts 0 or more. |
| Losing trades | number | Yes | Accepts 0 or more. |
| Break-even trades | number | Optional | Accepts 0 or more. |
| Average risk/reward ratio | number | Optional | Optional — compares against the break-even win rate. Accepts 0 or more. |
How to use it
- Enter Winning trades and Losing trades.
- Optionally add Break-even trades and Average risk/reward ratio.
- Select Calculate.
Worked example
38 wins, 42 losses, average risk/reward 1:2.
- Wins
- 38
- Losses
- 42
- Ratio
- 2
Win rate 47.5% against a 33.3% break-even requirement — expectancy +0.425R per trade.
Frequently asked questions
What is a good win rate?
It depends entirely on your ratio. Scalpers may need 70%+ with tight targets; trend followers can thrive at 35% because their winners are far larger.
How many trades before the numbers mean anything?
At least 30, preferably 100 or more. Short runs are dominated by luck in either direction.
Method and sources
Method. Wins as a percentage of total trades, with the break-even win rate implied by the reward-to-risk ratio for comparison.
Assumptions
- Every trade counted is comparable in size and risk.
Limitations
- Win rate alone says nothing about profitability. A 90% win rate loses money if the losses are large enough, and a 30% win rate can be highly profitable — which is why the break-even rate is shown beside it.
- Over a small sample the figure is mostly noise. Dozens of trades are needed before a win rate means anything, and hundreds before a small edge is distinguishable from luck.