Trading tools
Trading Calculators
Estimate fees, profit and loss, or position size from the values you enter.
Position size
Calculate position size from your loss allowance and stop price.
Enter your values and calculate to see an estimate.
Fees, slippage, funding, margin requirements and minimum order rules are excluded. This does not guarantee a loss limit, confirm an executable order size or recommend a position. No order is created.
How this estimate is calculated
Loss allowance R = equity × risk percentage ÷ 100; price difference D = |entry − stop|; quantity Q = R ÷ D; position notional = Q × entry. The calculation uses the exact quantity; only its display is rounded down.
Calculations retain exact decimal values internally. Final amounts are rounded half-up to 8 decimal places; displayed lines may not add up exactly after rounding. Position quantity is displayed rounded down to 8 decimal places. Position notional uses the exact quantity before rounding. A positive result that would otherwise round to zero is explicitly marked as less than 0.00000001, not as an exact zero.
Inputs are used only in this page’s memory. They are not sent to a server or saved. Editing an input clears the previous result. Clearing the form, changing calculator, leaving the page, reloading or changing language clears inputs and results.