Forex Margin Calculator
Find out how much money you need in your account to open a trade based on the instrument, lot size, and leverage you choose.
🎯 What is this calculator for?
Before opening any Forex trade, you need to know one fundamental thing: how much money will my broker hold as collateral? That's the margin. If you don't calculate it beforehand, you might find you don't have enough funds to open the position you want.
This calculator tells you in seconds how much margin you need, based on the instrument you're trading, the lot size, and your leverage level.
💎 What is margin in trading?
Margin is the amount of money your broker temporarily holds from your account as collateral to keep a trade open. It's not a fee or commission — it's a deposit that's returned to you when you close the position.
Think of it this way: it's like the security deposit you leave when renting an apartment. The money is still yours, but it's "locked" for the duration of the trade.
Used margin
The money your broker holds as collateral for your open trades
Free margin
The money available in your account to open new trades
Margin level
The percentage that shows how "healthy" your account is (equity ÷ used margin × 100)
⚡ What is leverage?
Leverage is a "temporary loan" your broker gives you to trade with more money than you actually have. If your leverage is 1:50, it means that for every $1 you put up as margin, you can control $50 in the market.
The higher the leverage, the less margin you need — but the greater the risk. It's a double-edged sword:
| Leverage | Margin for 1 lot (100k) | Risk | Recommended for |
|---|---|---|---|
| 1:10 | $10,000 USD | Low | Conservative traders |
| 1:30 | $3,333 USD | Moderate | Standard in Europe (ESMA) |
| 1:50 | $2,000 USD | Medium | Most common in Latin America |
| 1:100 | $1,000 USD | High | Experienced traders |
| 1:500 | $200 USD | Very high | Experts only / scalping |
🧭 How to use the calculator?
Four fields, instant result:
Select the instrument
Choose the currency pair or asset you want to trade. Each one has a different price that affects the calculation.
Enter the current price
Type in the market price of the instrument. You can check it on your trading platform or on TradingView.
Choose the lot size
How many units do you want to trade? A standard lot = 100,000 units. A micro lot = 1,000.
Select your leverage
Choose the leverage level your broker offers. The higher the leverage, the lower the required margin.
📝 Practical example
You want to open 1 standard lot of USD/MXN with 1:50 leverage:
Position size: 100,000 units
Calculation: 100,000 ÷ 50 = $2,000 USD margin
You need at least $2,000 USD available in your account to open that trade. If your account has $5,000, you'd have $3,000 in free margin left.
⚡ Calculate your margin now
Enter your trade details and find out how much you need.
💎 Margin Calculator
📋 Required margin by instrument
For quick reference, here is the approximate margin for 1 standard lot at 1:50 leverage:
| Instrument | Approx. price | Margin 1:50 | Margin 1:100 |
|---|---|---|---|
| EUR/USD | 1.0850 | $2,000 USD | $1,000 USD |
| GBP/USD | 1.2640 | $2,000 USD | $1,000 USD |
| USD/JPY | 149.50 | $2,000 USD | $1,000 USD |
| USD/MXN | 17.50 | $2,000 USD | $1,000 USD |
| XAU/USD | 2,350 | $4,700 USD | $2,350 USD |
❓ Frequently asked questions
No. Margin is not a cost. It's a security deposit your broker holds while your trade is open. When you close the trade, the margin is released and becomes available in your account again (along with your profit or loss).
You simply won't be able to open the trade. Your platform will show an "insufficient margin" error. That's why it's important to calculate beforehand: to know whether your account has enough funds for the position you're planning.
A Margin Call happens when your floating losses reduce your equity to the point where you no longer meet the minimum margin requirement. Your broker alerts you to deposit more funds or close trades. If you don't act, the broker may close your positions automatically (Stop Out).
No. More leverage means less required margin, but it also means your profits and losses are amplified. With 1:500, a small move against you can wipe out your account. Most professionals use low effective leverage even if their broker offers up to 1:500.
For pairs where USD is the base currency (like USD/MXN, USD/JPY), the margin stays relatively stable. For pairs like EUR/USD, the margin can fluctuate slightly because it depends on the value of the euro in dollars. In practice, the variation is minimal.
They are approximate. The actual margin may vary depending on your broker, account type (standard, ECN, micro), and market conditions. Some brokers apply different margin requirements for certain instruments or during periods of high volatility.
Know your margin before you trade
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