Forex Margin Calculator

A Margin Calculator in forex is a tool that calculates how much money (margin) you need in your trading account to open and maintain a leveraged trade.

In forex, you usually trade with leverage, meaning you control a large position using a smaller amount of your own money.

What is margin?

Margin = the amount of money your broker locks as collateral for a trade.

Example:

Trade size = $100,000
Leverage = 100:1

Required margin:

100
100000
​

Result:

Margin required = $1,000

So you only need $1,000 to control a $100,000 position.

What does a Margin Calculator use?

It calculates margin based on:

currency pair
trade size (lot size)
leverage ratio
account currency
current exchange rate
Common leverage examples
Leverage Margin Required
10:1 10%
50:1 2%
100:1 1%
500:1 0.2%
Why it matters

A Margin Calculator helps traders:

avoid overleveraging
manage risk
know how much capital is needed
prevent margin calls
Margin call

If losses reduce your account equity too much, the broker may:

warn you (margin call)
automatically close trades (stop out)
Example

Suppose:

Account balance = $2,000
Leverage = 100:1
Trade = 1 standard lot EUR/USD

The margin calculator shows:

Required margin ≈ $1,000

That means half your account is tied up in the trade.

Popular forex margin calculators:

Myfxbook Margin Calculator
FXTM Margin Calculator
Investing.com Margin Calculator
Babypips Forex Calculators