Free tool · Drawdown-aware sizing

Position Size Calculator

Most calculators size off your balance. On a funded account the drawdown buffer is what ends you — so size against that.

Instrument

Value per 1.0 point / move (per unit)

$ change per contract for a 1.0 price move.

Drawdown buffer ($)

Distance to your trailing/static floor — not account balance.

Risk per trade (% of buffer)

Our sizing runs ~15–25% of the buffer per trade (SL ≈ 0.6–1.25% of account ×1.25).

Stop distance (points)

—

contracts

—

Risk per trade ($)

—

% of buffer used

—

Risk per contract ($)

—

How to size vs trailing DD → Pass Estimator →

Futures point values shown are standard CME contract specs; for forex/CFD enter your broker's value per point. This rounds down to whole contracts. A drawdown buffer is small — risking a large % of it leaves no room for a losing run. Educational only, not financial advice; confirm contract specs and prop-firm rules directly.