Position size calculator
Size a futures trade from the share of your account you accept to lose at the stop, fees included, and see whether the stop or the liquidation comes first.
Exchange
Result
A stop below the entry makes this a long, above it a short. The size is what loses 100.00 USDT at the stop, fees included.
How the size is worked out
The loss at the stop is the distance from entry to stop times the size, plus the taker fee on the entry and on the exit. The calculator solves for the size at which that loss equals your account times the risk you chose. Leverage does not change that size; it only changes how much margin the position ties up and where the exchange would liquidate it.
Stop first, liquidation second
If the liquidation price sits between your entry and your stop, the exchange closes the trade before your stop does, and you lose the whole margin rather than the amount you planned. Lower the leverage until the stop comes first.