Forex Free Margin Calculator
Find how much margin remains available for new positions.
Please note: Forex trading carries a high risk of loss, amplified by leverage. Exchange rates must be entered manually — no live market data is used.
What the Forex Free Margin Calculator does
Free margin is equity minus used margin — the capital available to open new positions or absorb further losses on existing ones. It is the practical measure of how much room your account has left.
Formula
Equity = Balance + Unrealised P&LFree margin = Equity − Used marginNew position capacity = Free margin × Leverage
Inputs explained
| Input | Unit | Required | Notes |
|---|---|---|---|
| Account balance | selected currency | Yes | Accepts more than 0. |
| Used margin | selected currency | Optional | Accepts 0 or more. |
| Unrealised P&L | selected currency | Optional | Accepts 0 or more. |
| Leverage for new positions | one of 5 options | Yes | — |
| Currency | one of 10 options | Optional | — |
How to use it
- Choose Leverage for new positions and Currency.
- Enter Account balance.
- Optionally add Used margin and Unrealised P&L.
- Select Calculate.
Worked example
A $8,000 balance with $2,500 used margin and $400 of open profit, at 1:30.
- Balance
- 8000
- Used
- 2500
- Unrealised
- 400
- Leverage
- 1:30
Equity $8,400, free margin $5,900, allowing roughly $177,000 of additional notional exposure.
Frequently asked questions
Should I use all my free margin?
No. Free margin is also your buffer against losses on open trades. Using it all leaves nothing between you and a stop-out.