ATR Stop-Loss Calculator
Set a stop that adapts to how much the market is actually moving. Enter your entry, the ATR and a multiplier for a volatility-based stop price — and add your account and risk to get the exact position size that puts that stop at your chosen risk.
ATR (Average True Range) measures recent volatility. A stop set a multiple of ATR away from entry adapts to how much the market is actually moving, instead of a fixed number of points. Educational only, not financial advice.
Your ATR stop
How to use the calculator
- Pick long or short and enter your entry price.
- Enter the current ATR (read it off the ATR indicator on your chart) and choose a multiplier — 2x to 3x is common.
- Read your stop-loss price and the stop distance.
- Optionally add your account size and risk % to get the exact position size that keeps the ATR stop at your chosen risk.
Why volatility-based stops work
A fixed-point stop treats a calm market and a fast one the same, so it is either too tight (and you get shaken out of good trades by normal noise) or too wide (and you risk more than you need). ATR scales the stop to current conditions: wider when the market is volatile, tighter when it is quiet. That is why so many trend systems place their stops and trailing stops as a multiple of ATR.
The ATR read matters more when it does not move on you after the fact — which is the whole point of a non-repainting tool. VASA Trend AI includes ATR-based risk management on a non-repainting chart, and our ATR trailing-stop guide walks through trailing a runner with it. Educational only.
Frequently asked questions
How do you calculate an ATR stop-loss?
Multiply the ATR (Average True Range) by your chosen multiplier to get the stop distance, then place the stop that distance from your entry: below entry for a long, above entry for a short. For example, an entry of 100 with an ATR of 2.5 and a 2x multiplier gives a stop distance of 5, so the long stop sits at 95.
What ATR multiplier should I use?
Two to three times ATR is common. A smaller multiplier keeps stops tight but gets hit by normal noise more often; a larger one gives the trade room but risks more per unit. Match it to your timeframe and how much noise your strategy expects — and test it, don't guess.
Why use a volatility-based stop instead of a fixed one?
A fixed-point stop ignores how much the market is actually moving. In a fast market a fixed stop is too tight and you get shaken out; in a quiet market it can be recklessly wide. An ATR stop adapts to current volatility, so your risk is scaled to conditions.
How does the position size work?
If you enter an account size and a risk percentage, the calculator divides your risk amount (account times risk percent) by the ATR stop distance to give the number of shares or contracts that puts your stop exactly at your chosen risk. It is the same risk-first sizing every VASA course teaches.
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Educational tool only — not financial advice. Trading involves substantial risk of loss and nothing here promises a return. Also see our trading blog.