Calculate a long-position quantity from equity, risk budget and a stop price, with supplied trading fees and stop slippage.
Compare depth-adjusted spot spreads, model perpetual funding and inspect trading assumptions. Enable JavaScript to open the complete BTCMox workspace. The calculators work locally; live quotes require access to public provider APIs.
Every tool is provided as a separate HTML page with a stable address. JavaScript adds the interactive workspace; public data is optional.
Convert a chosen account risk budget into a long-position size. Supply equity, risk percentage, entry price, a lower stop, per-side trading fee and stop slippage. The model estimates loss per unit before calculating the quantity that fits that budget.
A stop-distance calculation alone ignores trading fees and execution slippage. This model reduces the assumed stop fill by the supplied slippage and includes fees on entry and the modeled exit. The resulting quantity and notional reflect those assumptions.
Actual fills can be worse during gaps, illiquidity or venue failures. The tool does not check your account balance, broker margin or liquidation price. Use the detailed position-size calculator for another editable worked example and verify the venue’s actual contract and order rules.
Calculation methodology ↗ · Data sources ↗ · Risk disclosure ↗