Stop-Loss Calculator
Convert a selected percentage, ATR multiple, or risk budget into a stop price with visible formula substitution.
This calculator does not identify technical support or determine whether a stop is appropriate for a specific security.
Trade risk
Turn a risk rule into a stop price
This tool converts your selected rule. It does not identify technical support or decide whether a stop is appropriate.
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Choose the right tool
Stop price or position size?
Stop-Loss Calculator
You know the position or stop rule. Calculate the stop price.
Position Size Calculator
You know the stop and maximum risk. Calculate the share count.
Calculate a smaller position →How to use
From inputs to a result you can review
- Choose Percentage, ATR, or Risk Budget.
- Select long or short and enter the planned entry.
- Add a position size to calculate total planned risk.
- Optionally include target price, fees, and estimated slippage.
- Review both the planned stop and execution-risk estimate.
Known limitations
What this calculation does not know
- ATR describes recent price range; it does not predict future volatility.
- A stop order may execute beyond the selected price.
- Technical support, liquidity, and instrument-specific rules are not assessed.
- The output is a conversion of your rule, not an optimal-stop recommendation.
Educational calculation only. This is not personalized investment, trading, or tax advice.
Formula reviewed
Report an error →Method version 1.0
Calculation logic reviewed against the published methodology and automated test cases. Last updated August 5, 2026.