Tools
Decide how much you are willing to lose first, then size the position to match. The calculator includes trading fees on both sides and warns when your stop-loss sits beyond the estimated liquidation price.
Enter your balance, risk, entry and stop-loss to see the result.
Estimates only. Real results depend on fills and slippage, your fee tier, funding while the position is open, and the exchange’s margin rules: the liquidation price shown is an isolated-margin approximation, while AtlasPerp accounts use cross margin by default. The order panel shows the exchange’s own estimate before you trade. Risk disclosure
Your loss at the stop depends on position size and stop distance. Leverage only changes how much margin the position locks up and how close liquidation is.
You pay a fee to open and another to close, on the full position size. On tight stops, fees can be a large share of the loss. See fees
If liquidation is closer than your stop, the stop never protects you. Keep a buffer. How liquidation works