ATR Stop-Loss Calculator

Let volatility, not hope, place your stop

ATR stops keep you from putting a stop right where the market naturally breathes. By deriving both the stop distance and the position size from real volatility, this tool fixes your risk in dollars while adapting to conditions. Convert the stop distance into a hard share count on the position size calculator.

Stops sized by the market's actual wiggle

ATR — average true range — measures how far a coin typically travels in a period. An ATR-based stop places your exit a multiple of that range away (commonly 1.5–2× ATR), which means the stop automatically widens in wild markets and tightens in calm ones. Fixed-percent stops treat a memecoin and a stablecoin pair identically; ATR stops don't.

Worked example: a coin at $10 with a daily ATR of $0.45 gets a 2×ATR stop at $9.10 — 9% away. The same rule on a calmer coin with $0.15 ATR puts the stop 3% away. Same discipline, different distances, each fitted to what the instrument actually does on a normal day.

The sizing consequence is the point: wider volatility-fitted stops force proportionally smaller positions (risk = size × stop distance, held constant). The system quietly caps your exposure to the wildest instruments — which is exactly where oversizing does its damage. Traders who resist ATR stops usually aren't objecting to the stop placement; they're objecting to being told the honest position size.

A carefully sized ATR stop only works if the exchange actually fills it near that price during a fast move — thin order books and wide spreads on volatile pairs can turn a clean 2×ATR exit into real slippage:

FAQ

Why size stops with ATR instead of a fixed percent? A fixed 2% stop ignores how volatile the asset actually is. In a calm market it is too wide; in a violent one it gets hit by noise. ATR measures the asset’s real recent range, so an ATR-based stop adapts — wide when volatility is high, tight when it is low — and your position size shrinks or grows to keep dollar risk constant.

What ATR multiplier should I use? Common choices are 1.5× to 3× ATR. Tighter multipliers (1.5×) suit trending, low-noise conditions; wider ones (3×) give a swing trade room to breathe. Backtest on your asset and timeframe — too tight and you get stopped by normal wiggles, too wide and your position size becomes tiny.