Risk Position Size Calculator

Calculate position size, margin, risk/reward and liquidation price from your account risk %.

A position size calculator for traders. Enter your capital, risk per trade, entry and stop, and it tells you exactly how much to buy or sell so that hitting your stop loses only the amount you chose to risk. KEY FEATURES • Position size from risk % and stop distance, with optional quantity decimals (always rounded down, so the loss never exceeds your risk) • Long / short detected automatically • Fees, slippage and funding are included in the loss, and the size is reduced to match • Take profit: expected profit and risk/reward after fees • Optional leverage: required margin and estimated liquidation price, with a warning when liquidation is close to or before your stop • Scale-in entries: up to 3 batches with weights, showing the average entry and the size of each batch • Funding fees: enter the funding rate and hold days to estimate how many settlements you pay and how much • Capital, risk and fee settings are remembered per symbol • History: keeps your latest 100 calculations, filter by symbol or side, expand scale-in batches, export to CSV (opens in Excel) • Share card: enter your close price to create an image with your return %, then download or copy it • One-click copy of the size or the full result • English and Traditional Chinese, dark mode PRIVACY No account, no network access, no data collection. Settings and history stay in your Chrome (synced through your Chrome account). DISCLAIMER For calculation reference only, not financial advice. The liquidation price is an estimate; always check your exchange.