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Tools / Position size

Crypto position size calculator for futures and perpetuals

Enter how much of your account you accept to lose and where your stop goes. The calculator returns the size that loses that amount if the stop is hit, fees included.

FREE TOOL

Know the exact size before you click buy

Most blown accounts start with a size picked by feel. Enter account, risk and stop. Get the exact size, the margin it ties up and the liquidation price, fees included.

  • Risk a fixed % on every trade
  • Fees counted in and out
  • Warns when the stop sits near liquidation

▶ Free lesson: how to size a position with leverage

Direction

Leverage does not change the amount you lose at the stop. It changes the margin you tie up and how close liquidation sits. Liquidation is an estimate for isolated margin with 0.5% maintenance margin.

How it works

The risk amount is account size times the risk percentage. Size is that amount divided by the distance between entry and stop, plus the fees you pay to get in and out. The full explanation, with a worked example, is in the guide.

Read: How to size a crypto position with leverage

Watch the lessons on the channel

Questions people ask

How do I calculate position size for a crypto trade?

Multiply your account size by the risk percentage to get the amount you accept to lose. Divide that amount by the distance between entry and stop, and include the fees you pay to get in and out. With a 10,000 USD account, 1% risk, an entry at 60,000 and a stop at 58,800, the size is about 0.083 BTC.

Does leverage change my position size?

No. Leverage changes the margin the exchange asks for and how close liquidation sits. The amount you lose at the stop depends on the size and the stop distance, not on leverage.

What risk per trade should I use?

Many traders use between 0.5% and 2% of the account per trade. What matters more is keeping the number fixed so every loss is survivable and every result comparable. This is education, not advice.

Can I use it for long and short trades on perpetual futures?

Yes. Choose long or short, enter the taker fee per side and the leverage, and it also shows an estimated liquidation price for isolated margin so you can check that your stop sits well inside it.