Win Rate & Risk–Reward Calculator
Compute risk/share, reward/share, R:R, breakeven win-rate, and expectancy — with a gradient gauge and crisp charts.
R:RExpectancyPosition sizing
Trade setup
Assumes a long setup. Rule: Entry > Stop and Target > Entry.
Sized quantity: 45
Reward vs Risk
Reward
Risk
Reward11.50
Risk5.50
R:R 2.09x• Breakeven win-rate: 32.4%
Tip
Many traders keep 1–2% risk per trade of account equity — adjust size so max loss stays inside your rules.
How to use this calculator
- Pick Long/Short, then set Entry, Stop, Target. You’ll see risk/share, reward/share and R:R.
- Size by shares or toggle size from risk % to use account-based risk.
- Add fees/slippage to update breakeven price and net P/L.
- Use Win-rate % to estimate expectancy.
Notes & limitations
- Gaps, borrow costs and fills can differ — stress test wider stops and higher slippage.
- R:R compares setups; it doesn’t predict which trade will win.
- Education only — not financial advice.
- Explore more: R:R Basics • ROI • Win-rate & Expectancy
Results & visuals
Risk / share
5.50
Reward / share
11.50
R:R & breakeven win-rate
2.09 • 32.4%
R:R gauge (capped at 3×)
Expectancy per trade vs Win-rate
R:R = reward ÷ risk; breakeven win-rate = 1 / (1 + R). Expectancy ≈ Win% × NetReward − (1 − Win%) × NetRisk.