Crypto position size calculator

Estimate a position quantity from the account amount you enter, your chosen loss budget, and the price distance from entry to stop. This is an arithmetic scenario; it does not select a risk percentage for you.

Enter the five assumptions and calculate.

The result assumes the entered stop price is the exit price. It excludes trading fees, funding, slippage, gaps, contract multipliers, lot-size increments, margin and leverage limits, and taxes. Actual loss can exceed the estimate if execution differs from the stop price. The notional is the position's entry value, not the required margin.

Method

• Risk budget = account size × risk percentage ÷ 100.
• Price risk per coin = absolute value of entry price − stop price.
• Estimated quantity = risk budget ÷ price risk per coin.
• Entry notional = estimated quantity × entry price.

For a long position the stop must be below entry. For a short position it must be above entry. This tool checks that relationship but does not assess whether a trade or risk amount is suitable.

Sources

• Investopedia: Position Sizing — explains sizing in relation to account size, risk tolerance and stop placement, with risk budget divided by per-unit trade risk.
• CME Group: The 2% Rule — notes that the 2% threshold is arbitrary and traders can choose tighter or looser parameters.

Sources checked 2026-11-03. This calculator is an educational estimate, not investment advice or an order recommendation.