Risk / Reward Calculator

The risk/reward ratio compares the potential loss of a trade to its potential gain. It answers a fundamental question every trader must ask before entering a position: for every dollar I risk, how many dollars do I stand to gain?

The ratio is expressed as 1:X, where 1 represents your risk unit and X represents your potential reward. A 1:3 ratio means you risk $1 to potentially gain $3.

Traders often think in terms of R multiples. Your initial risk defines 1R. If you risk $200 on a trade, then:

• 1R = $200 (your initial risk)
• 2R = $400 (twice your risk, breakeven point for a 50% win rate)
• 3R = $600 (three times your risk)
• 0.5R = $100 (a partial loss, if stopped out at a tighter level)

The formula for calculating the ratio uses your entry price, target price, and stop loss price:

R:R Ratio = (Target Price - Entry Price) / (Entry Price - Stop Loss Price)

For a short position, the formula mirrors this: risk is measured upward from entry to stop, and reward is measured downward from entry to target.

The risk/reward ratio is not just a metric; it is the foundation of long term profitability. Even a trader with a relatively low win rate can be profitable if their average winners are significantly larger than their average losers.

This is captured by the expectancy formula, which calculates the average expected outcome per trade over a large sample:

Expectancy = (Win Rate x Avg Win) - (Loss Rate x Avg Loss)

Consider a trader using a 1:3 risk/reward ratio consistently. At a 1:3 ratio, the mathematical breakeven win rate is just 25%. This means:

• Win 25% of trades, lose 75% of trades
• Each win pays 3x the loss amount
• 25 wins x $300 = $7,500 in profits
• 75 losses x $100 = $7,500 in losses
• Net result: breakeven, before fees

Any win rate above 25% at a 1:3 ratio generates a positive expectancy. This is why professional traders focus on setups with favorable risk/reward ratios rather than trying to achieve high win rates at the expense of reward size.

Each risk/reward ratio has a corresponding breakeven win rate. Knowing this number helps you assess whether your trading system is mathematically viable over time.

Breakeven win rate is calculated as: 1 / (1 + R:R). Fees and slippage will raise the effective breakeven threshold in live trading.

Your stop loss placement directly determines your risk amount and, consequently, your position size. There are three widely used approaches, each with distinct advantages and tradeoffs.

Scaling out of a position at multiple take profit levels is a powerful technique that balances locking in profits with allowing a portion of the position to capture larger moves. Rather than exiting the entire position at once, you exit in tranches as price reaches predefined targets.

A common scaling strategy might look like this:

• Exit 50% of position at 2R (securing the majority of the trade)
• Exit 30% of position at 3R (capturing additional momentum)
• Exit 20% of position at 5R (letting a small runner capture extended moves)

The blended R:R for this example, weighted by allocation, is:

Blended R:R = (0.50 x 2R) + (0.30 x 3R) + (0.20 x 5R)
Blended R:R = 1.00 + 0.90 + 1.00 = 2.9R

This blended 1:2.9 ratio requires a breakeven win rate of approximately 26%. The practical benefit is psychological as well as mathematical: locking in partial profits at 2R makes it easier to hold the remaining position without emotional interference.

Important: once you take partial profits, move your stop to breakeven on the remaining position. This eliminates further risk on that portion while the runner continues.

Even traders who understand the theory often fall into predictable errors that undermine their edge over time.

• Moving stop losses to avoid being stopped out. When price approaches your stop, the temptation to widen it is strong. This fundamentally breaks your risk/reward calculation and turns a planned loss into a potentially catastrophic one. Your stop represents the price at which your trade thesis is invalidated. Honor it.
• Not accounting for trading fees. On a 1:1 trade, even a 0.1% round trip fee significantly erodes profitability over hundreds of trades. Always calculate net reward after fees, especially when using taker orders on both entry and exit.
• Setting unrealistic targets. A 1:10 ratio sounds attractive, but if the target sits above major resistance or requires price to move far beyond what the setup justifies, it will rarely be reached. Base targets on actual market structure, not desired profit amounts.
• Ignoring market structure. A technically valid risk/reward ratio becomes meaningless if your target sits directly below strong resistance or your stop is placed inside a liquidity zone. Structure context determines whether calculated levels are realistic.