Tradivex Calculators
ATR Stop-Loss & Position Size Calculator
Estimate a volatility-adjusted stop distance and position size from ATR, risk budget, and contract or share value.
Risk budget
250.00
ATR stop distance
3.75
Estimated units
66.6667
Stop price
96.25
Target price
107.50
How this calculator works
Practical guide and assumptions
ATR is a volatility measure based on recent true ranges. This calculator uses ATR as an input for a possible stop distance and then estimates a position size from the resulting risk per unit.
Formula and method
Stop distance = ATR × chosen multiplier. Estimated size = risk budget ÷ (stop distance × value per price unit). ATR does not tell you market direction and does not guarantee that a stop will avoid a loss larger than planned.
Before using the result
- Use an ATR calculated from the same instrument and timeframe as your trade plan.
- Confirm whether the contract or share value is quoted per point, tick, pip, or unit.
- Recalculate when volatility, account equity, or the stop location changes.
Frequently asked questions
What ATR multiplier is correct?
There is no universal multiplier. It depends on the instrument, timeframe, strategy, and how much normal price movement you want the stop to tolerate.
Can ATR predict the next move?
No. ATR measures historical or recent volatility; it is not a direction forecast or a signal.