Position size calculator
Decide how much of your balance a losing trade may cost, enter your entry and stop-loss, and see how many coins to buy so that the stop costs exactly that, fees included. The calculator rounds to the coin's own order step on Binance and checks that the stop sits inside the liquidation distance at your leverage.
Binance coin rules as of 2026-10-05 19:05 UTC.
How position sizing works
Size the position from the loss you accept, not from the leverage. If a stop 2% away should cost 10 USDT, the position must be about 500 USDT in value, whatever the leverage. Leverage only decides how much margin that position ties up.
In one line: quantity = risk amount ÷ (distance from entry to stop + the fees on opening and closing), rounded down to the order step Binance allows for the coin.
Two checks matter before you open it: the position must be at least the coin's minimum order on Binance, and the stop must sit inside the liquidation distance at your leverage, or liquidation closes the trade before your stop does, and the stop never acts.
A worked example
With 1,000 USDT and 1% risk, you accept losing 10 USDT. For a long on BTC at 60,000 with a stop at 58,800 (2% away), each BTC loses 1,200 USDT plus about 59 USDT in fees at the stop, so the size is 10 ÷ 1,259 ≈ 0.0079 BTC, rounded down to 0.007 BTC: a 420 USDT position that needs 84 USDT of margin at 5x.
Questions
How much should I risk per trade?
That is your decision. Many traders keep a single trade to 1–2% of the balance so that a run of losses does not wipe the account; this calculator only does the arithmetic for whatever share you choose.
Does leverage change my risk?
Not by itself: the loss at the stop depends on the position size and the stop distance. Leverage changes the margin the position ties up and how close liquidation is, which is why the calculator checks that your stop comes first.
Why is the size rounded down?
Binance accepts quantities only in the coin's own step, such as 0.001 BTC. Rounding down keeps the loss at the stop at or below your risk amount.
Are fees included?
Yes, as an estimate: Binance's standard 0.05% taker fee on the opening and on the closing order. Discounts, maker fills, funding and slippage at the stop change the real figure.
What if the stop is beyond the liquidation price?
Then liquidation closes the position before the stop and the loss is the whole margin, not your planned risk. Lower the leverage or move the stop closer; the liquidation calculator shows exact distances.
Related: the liquidation price calculator, the average entry calculator and how stop-losses work in HafizeBot. HafizeBot sends AI-generated signals for Binance futures and can trade them on your own account; try VIP free for 3 days.