Position Size Calculator
Binance-style crypto futures position size calculator: pick a USDT perpetual with live mark price, set leverage, risk and stop loss, and get the exact quantity, margin, fees and estimated liquidation price.
Mark price
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Fill in every field.
How it works
- 01
Choose the perpetual, Long or Short, and your leverage — the entry fills from the live Binance mark price.
- 02
Set how much of your wallet you're willing to lose (for example 1%) and where your stop loss sits.
- 03
Quantity = risk budget ÷ (stop distance + taker fees in and out), rounded down to the pair's Binance lot step. Leverage only changes the margin you post, not the size.
FAQ
Why doesn't leverage change the position size?
Your risk is set by the stop distance and the amount you're willing to lose. Leverage only changes how much margin you post — and how close the liquidation price is.
Why is the quantity a little below my risk?
It's rounded down to the pair's minimum lot step on Binance, so the order is actually placeable. The real loss at the stop is shown in the result.
Is the liquidation price exact?
It's an estimate for isolated margin with a 0.5% maintenance rate. Binance uses tiered rates by position size, so check the order screen before opening.
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FREE WITH AN ACCOUNTInformational, not financial advice.