A risk-reward calculator measures the ratio between what you stand to lose and what you stand to gain on a trade, telling you whether the math is in your favor before you commit capital. Every professional trader evaluates R:R before entering a position.
What Is the Risk-Reward Ratio?
The risk-reward ratio (R:R) compares your potential loss to your potential gain. A 1:2 ratio means you risk 1 unit to potentially gain 2. If you risk 25 pips with a stop loss and target 50 pips of profit, your R:R is 1:2.
This ratio is the foundation of trading expectancy. It answers a deceptively simple question: given my win rate, does this trade make money over the long run?
The R:R Formula
For long trades: R:R = (Take Profit Price - Entry Price) / (Entry Price - Stop Loss Price)
For short trades: R:R = (Entry Price - Take Profit Price) / (Stop Loss Price - Entry Price)
Example: Long EUR/USD
- Entry: 1.1000
- Stop Loss: 1.0975 (25 pips risk)
- Take Profit: 1.1050 (50 pips reward)
- R:R = 50 / 25 = 1:2
At a 1:2 ratio, you only need to win 33.3% of your trades to break even. Win 40% of the time and you are solidly profitable.
The Break-Even Win Rate
Every R:R ratio has a corresponding break-even win rate. This is the minimum percentage of trades you need to win to avoid losing money:
| R:R Ratio | Break-Even Win Rate | Margin for Error |
|---|---|---|
| 1:0.5 | 66.7% | Very tight |
| 1:1 | 50.0% | Tight |
| 1:1.5 | 40.0% | Moderate |
| 1:2 | 33.3% | Comfortable |
| 1:3 | 25.0% | Wide |
| 1:4 | 20.0% | Very wide |
| 1:5 | 16.7% | Extremely wide |
The higher your R:R, the fewer trades you need to win. But there is a trade-off: higher R:R targets are hit less frequently. A 1:5 target sounds great until you realize your take profit is rarely reached, and your effective win rate drops below 16.7%.
How to Use This Calculator
- Enter your entry price — the level where you plan to open the trade.
- Enter your stop loss — based on technical analysis, not an arbitrary pip count.
- Enter your take profit — a realistic target based on structure, support/resistance, or measured moves.
- Optionally enter lot size — to see the R:R in dollar terms, not just pips.
- Evaluate the result — if the R:R is below your minimum threshold, skip the trade.
R:R Ratios by Trading Style
Different trading strategies produce different natural R:R profiles:
Scalping (1:0.5 to 1:1.5): Scalpers compensate for lower R:R with higher win rates (60-80%). The math works, but requires precision execution and low transaction costs.
Day Trading (1:1.5 to 1:3): Most day traders target 1:2 as a baseline. This allows for a 40-45% win rate while remaining profitable — a realistic threshold for most strategies.
Swing Trading (1:2 to 1:5): Wider targets capture larger moves but take longer to hit. Swing traders accept lower win rates (30-40%) in exchange for outsized winners.
Position Trading (1:3 to 1:10): Long-term positions can achieve extraordinary R:R ratios, but the trade-off is time and capital commitment. Winners may take weeks or months to materialize.
Common R:R Mistakes
Setting arbitrary R:R targets. “I always target 1:2” sounds disciplined, but it ignores market structure. If there is a major resistance level 30 pips above your entry and you need 50 pips for your 1:2 target, the market does not care about your ratio. Set take profits at levels where price is actually likely to reach.
Ignoring spreads and commissions. A 1:1 R:R with a 2-pip spread on each side is actually about 1:0.85 after costs. On tight scalps, transaction costs can turn a theoretically profitable R:R into a losing proposition.
Evaluating R:R in isolation. A 1:5 R:R ratio that wins 10% of the time has a negative expectancy. R:R only matters in combination with your actual win rate. This is why tracking both metrics in your journal is essential.
Moving your take profit closer during the trade. Fear of giving back profits causes many traders to close trades at 1:1 even though they planned for 1:2. This halves your reward without changing your risk, destroying your edge. If you consistently close early, your actual R:R is different from your planned R:R — and your journal should reflect this.
R:R and Expectancy
The formula that ties everything together:
Expectancy = (Win Rate x Average Win) - (Loss Rate x Average Loss)
For a trader with a 45% win rate and a 1:2 R:R (risking $100 to make $200):
- Expectancy = (0.45 x $200) - (0.55 x $100)
- Expectancy = $90 - $55 = $35 per trade
This trader expects to make $35 on average for every trade entered. Over 100 trades, that is $3,500 in expected profit — all from a system that loses more often than it wins.
Connecting R:R to Your Trading Journal
The R:R ratio you plan is rarely the R:R you achieve. Traders exit early, move stops, add to losers, and take partial profits in ways that distort their intended ratio.
PipJournal tracks both your planned and actual R:R for every trade, then surfaces the gap between intention and execution. Common findings include:
- Average planned R:R of 1:2 but actual R:R of 1:1.3 (taking profits too early)
- Planned risk of 25 pips but actual average stop distance of 35 pips (moving stops against the position)
- Higher R:R on certain pairs or sessions (revealing where your edge actually lives)
A position size calculator ensures you risk the right amount. A pip calculator converts that risk to dollars. But the R:R calculator answers the more fundamental question: is this trade even worth taking?
PipJournal compares your planned R:R against your actual outcomes on every trade, showing you exactly where the gap between plan and execution costs you money.
