Crypto position size calculator
How much Bitcoin should you buy? Not "as much as you can afford". Enter your account, your risk and your stop. See the exact coins, what the trade costs, and what the stop takes from you, fees and all.
How it works: money at risk = account × risk %. For a buy, the loss on one coin at the stop = (entry − stop) + the fee to get in (entry × fee %) + the fee to get out (stop × fee %). A short is the same with (stop − entry). Coins = money at risk ÷ loss per coin, rounded down. Position value = coins × entry. With leverage, the cash you put up (margin) = position value ÷ leverage. Funding fees and slippage are left out.
Leverage doesn't change the size. Your stop does.
Here's the part most new crypto traders get backwards. The number of coins comes from your stop and your risk, nothing else. Leverage only changes how much cash the exchange holds while the trade is open. Turn leverage up and keep the same coins, and your loss at the stop stays the same. Turn it up and buy more coins "because you can", and you've raised your risk without noticing. High leverage can also get you closed out before your stop: check it with the crypto liquidation calculator. More in crypto leverage and perpetuals.
Why fees belong in the size
You pay a fee to get in and another to get out. On a tight stop, those two fees can be a real slice of the loss. Leave them out and every stop costs a bit more than you planned. Put your stop where the idea is wrong, not where the size looks nice: how to set a stop loss. Log each trade's size and stop in my free trading templates.
Make this a habit, not a one-off. Lesson 2 of our free email course is all risk: the 1% rule, where your stop goes, and the 2-loss rule. Send me the free lessons →
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