Margin Calculator
Calculate required margin for any position size and leverage level.
Trade details
Result
How this calculator works
Margin is the collateral your broker requires to open and maintain a leveraged position. It is not a cost or a fee — it is a security deposit that is returned when you close the trade. The higher your leverage, the less margin you need.
Be careful: high leverage amplifies both gains and losses. A small adverse move can trigger a margin call if your account equity falls below the maintenance margin. The calculator includes a warning when required margin exceeds $10,000 equivalent as a sanity check.
margin = lotSize × contractSize × openPrice / leverage
Free margin is the equity available to open new positions. The calculator estimates free margin by assuming your account balance is roughly 100x the required margin — a generous cushion that highlights how much room you have before hitting limits.