マージン計算機
How to Calculate Margin?
Select your currency pair, account currency (deposit base currency), and leverage ratio, input your trade size (in units, 1 lot = 100,000 units), and click calculate. The calculator will use the current real-time prices for exact values.
For example, for a USD account with leverage 1:100 and the current forex prices (as of writing), the margin cost would be:
| Currency | Base to Deposit Conversion | Lots | Margin |
|---|---|---|---|
| EURUSD | 1.19477 (EUR-USD) | 1 | $1,194.78 |
| AUDUSD | 0.77402 (AUD-USD) | 1 | $774.02 |
| USDJPY | 1 (USD-USD) | 1 | $1,000.00 |
Why Is Margin Important?
Opening a trade with too much margin can quickly lead to a margin call. Opening a trade with insufficient margin could lead to a profitable trade that has little impact on your trading account. Therefore, the margin required should be somewhere in between, according to your risk appetite.
How to Manage Margin Risk
Effective margin management is essential for long-term trading success. Set a personal margin limit before opening new trades, and avoid committing all of your equity to a single position. Use stop-loss orders to protect your capital and regularly monitor market volatility. Diversifying your trades across different currency pairs can also help spread risk and reduce exposure to sudden price swings.
What Does 1:100 Leverage in Forex Mean?
If you open an account with $100 and have leverage of 1:100, this means you can control up to $10,000 worth of positions. Your required margin will depend on the trade size.
For example, opening a $10,000 position with 1:100 leverage would require just $100 in margin.
Free Margin vs. Used Margin
Your account balance is divided into free margin and used margin.
- Used margin is the portion of your funds locked in to maintain your open positions.
- Free margin is the remaining equity available for opening new trades or absorbing potential losses.
Monitoring these values helps ensure you have a sufficient cushion to handle market fluctuations without triggering a margin call.
How Much Margin Do I Have in My Account?
That depends on your account leverage and open positions. Each open trade in your account reduces your available margin.
For example, a trade of 1 lot EURUSD has a notional value of 100,000 × 1.1912 = $119,120. With 1:100 leverage, the margin required would be $1,191.20.
If you have an account balance of $100 and a leverage of 1:100, open positions with a total margin requirement of $5,000 would leave you with $10,000 – $5,000 = $5,000 available margin.
Keep in mind that while higher leverage increases available margin, it also raises risk, so don’t always go for the highest leverage a broker has to offer.
The Role of the Margin Level
Margin level is a key indicator of account health and is calculated as:
(Equity ÷ Used Margin) × 100
- A high margin level (for example, above 300%) means your account is well-capitalized relative to open positions.
- A low margin level (close to 100% or below) signals that you are at risk of a margin call.
Keeping an eye on your margin level allows you to adjust trades before problems arise.
What Is a Margin Call in Forex?
When you’re trading forex with leverage, the broker provides additional buying power according to your chosen leverage. While this increases potential profit, it equally magnifies potential losses.
- A margin call occurs when your margin level falls below the broker’s set threshold (commonly around 80%), warning you to deposit more funds or close positions.
- If the margin level drops further (often 50% or lower), the broker may automatically close your positions, which is called a stop-out.
This system prevents your account from going into a negative balance.
Tips for Choosing Leverage
Leverage can amplify both profits and losses.
- New traders may benefit from using moderate leverage, such as 1:30 or 1:50, until they gain more experience.
- Experienced traders might choose higher leverage, but usually combine it with strict stop-loss orders and disciplined risk management.
Key Takeaway
Understanding margin is not only about knowing the formula; it’s about planning trades, managing leverage carefully, and maintaining a healthy free margin. By combining smart risk management with this calculator, you can protect your capital and trade with confidence even in volatile market conditions.
Next Steps for Complete Trade Preparation
Once you understand your margin requirements, you may want to plan the rest of your trade. Myfxbook offers other free tools that naturally complement the Margin Calculator:
- Pip Calculator to measure the value of each pip for precise stop-loss or take-profit settings.
- Position Size Calculator to determine the optimal lot size based on your account balance and risk level.
- Profit Calculator to estimate potential profit or loss for different market moves.
Using these calculators alongside the Margin Calculator provides a full trade-planning workflow, from evaluating required margin and sizing your trade to managing risk and projecting outcomes.
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