Calculate your risk to reward ratio and the minimum win rate your strategy needs to break even.
The risk/reward ratio compares how much you stand to lose on a trade with how much you stand to gain. It is the second half of the risk-management equation: position sizing tells you how big a trade should be, while risk/reward tells you whether the trade is even worth taking. A setup where you risk $300 to make $100 is a losing proposition over time no matter how confident you feel; a setup where you risk $100 to make $300 can be profitable even if you are wrong more often than you are right.
What makes this metric so useful is that it converts directly into a break-even win rate — the percentage of trades you must win just to avoid losing money. At a 1:1 ratio you need to win more than half your trades. At 2:1 you only need to win one in three. At 3:1 you need just one winner in four. Knowing this number before you enter lets you judge a setup honestly: if your strategy historically wins 45% of the time, any trade offering better than roughly 1.25:1 is mathematically in your favour.
This is why experienced traders obsess over reward-to-risk rather than chasing a high win rate. A high win rate feels good but tells you nothing about profitability on its own — a trader who wins 90% of trades but lets the 10% run into huge losses still ends up broke. By insisting on a minimum ratio for every trade and skipping setups that do not offer it, you tilt the math permanently in your direction.
The calculator shows your R:R ratio and the minimum win rate your strategy needs to be profitable at that ratio.
R:R Ratio = Reward ÷ Risk
Break-even Win Rate = Risk ÷ (Risk + Reward) × 100
A 2:1 R:R means you only need to win 33.3% of trades to break even. A 3:1 R:R needs only 25% wins. This is why professional traders focus on R:R ratio as much as win rate.
A minimum of 2:1 is recommended for most strategies. Day traders often target 2:1 to 3:1. Swing traders may target 3:1 or higher to compensate for lower win rates.
Yes. A strategy winning only 40% of trades can be very profitable with a 3:1 R:R. Win rate and R:R ratio work together — use the Expectancy Calculator to see the full picture.
Not necessarily. Scalpers with 70–80% win rates can be profitable at 1:1 or 1.5:1. What matters is that your win rate exceeds the break-even win rate at your R:R.
Always from your actual entry price, not the current price or yesterday's close. Risk is the distance from entry to your stop loss; reward is the distance from entry to your target. Both should be levels the chart justifies — a support/resistance zone, a prior swing, or a measured move — not arbitrary round numbers chosen to make the ratio look good.
No. A 5:1 ratio is meaningless if the target is unrealistic and almost never gets hit. The ratio only tells you the payoff if both levels are reached. Pair it with a realistic assessment of how often price actually travels to your target versus your stop, then confirm the combination is profitable with the Expectancy Calculator.
The practical workflow is to set your stop loss first at a level the chart defends, then identify a realistic target, and only then calculate the ratio. If the resulting number falls below your personal minimum — many traders use 2:1 as a hard floor — you skip the trade entirely. This single rule removes a huge share of low-quality, impulsive entries.
Once a trade clears your ratio test, feed the same entry and stop into the Position Size Calculator to determine how many shares or contracts to trade. Together the two tools form a complete pre-trade checklist: risk/reward decides whether to trade, and position sizing decides how much. Over hundreds of trades, consistently demanding favourable reward-to-risk is what turns a mediocre win rate into a profitable track record.