Check whether a setup is worth taking by calculating R:R ratio and break-even win rate.
Free · no sign-up · Runs in your browser · Last updated 18 September 2026
The short version
Break-even win rate ≈ 1 ÷ (1 + R:R). At 2:1 that's 33% — before commissions.
A risk-reward calculator compares potential profit to potential loss from entry, stop loss, and take profit. Traders use it to get the R:R ratio and the minimum win rate needed to break even — for example 2:1 R:R requires only a 33% win rate before costs.
A 2:1 risk-reward ratio means potential profit is twice potential loss. At 2:1 you need roughly a 33% win rate to break even before commissions. Higher R:R allows lower win rates but often fewer qualifying setups.
Break-even win rate ≈ 1 ÷ (1 + R:R). At 2:1 R:R that is 1 ÷ 3 ≈ 33%. Add commissions and slippage when comparing to your actual win rate.
TradeReview keeps the planned R:R next to the R:R you actually got, so a month of “good-looking” trades cannot hide a string of 1:1 scratches. Free forever, no card.