Find your max safe contract size. Never risk more than 25% of your max DD on a single trade — this calculator enforces that math.
// LIVE TOOL
Inputs
Enter your account info. The calculator gives you the max contract size that respects the 25% rule.
Max Risk Per Trade
$500
Max Position Size
1
Actual Risk At This Size
$400
% of DD Used
20%
// HOW THIS WORKS
Max risk = drawdown × risk%. The calculator figures out how many contracts you can take with your stop without exceeding that risk. Always round DOWN. Trade smaller, last longer.