What is margin in trading?

Margin is the amount of capital you need to open and maintain a leveraged position. It's a percentage of the total trade value, and the calculator helps you determine that amount based on your trade size and leverage.

How does leverage affect margin?

Higher leverage reduces the margin required, allowing you to control a larger position with less capital. For example, 100:1 leverage means you only need 1% of the trade value as margin.

What is the formula for margin?

Margin = (Trade Size × Price) / Leverage. This calculator uses that formula to give you the required capital instantly.

Finance

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Margin Calculator.

Aug 4, 2026

Required margin and leverage calculations

On-device calculationNo signup

Set your values

Results update as you type.

02 / ANSWER

Trade value

Leverage

Required capital

$2,000.00

How to Use the Margin Calculator

Calculate profit margin and markup from cost and selling price.

Enter the cost price.
Enter the selling price (or desired margin).
See profit, margin %, and markup %.

Margin Formulas

Profit Margin

Margin% = (Price − Cost) / Price × 100

Profit as a percentage of the selling price.

Example:

Input: Cost $60, Price $100

Calculation: (100−60)/100

Result: 40% margin

Markup

Markup% = (Price − Cost) / Cost × 100

Profit as a percentage of the cost.

Example:

Input: Cost $60, Price $100

Calculation: (100−60)/60

Result: 66.7% markup

Real-World Use Cases

Retail Pricing

Set prices that hit a target margin.

Wholesale

Convert between markup and margin.

Tips

Margin and markup are not the same — don't confuse them.
A 50% markup is only a 33% margin.

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Cite this calculator

Canonical URL: https://mathify.one/en/finance/margin

Updated Aug 4, 2026

Cite as: Mathify. (2026). Margin Calculator. https://mathify.one/en/finance/margin

Use Cases

Plan Your Forex Trades

Determine how much capital you need to open a forex position with your chosen leverage, helping you manage risk and avoid margin calls.

Example: Trade 10,000 units of EUR/USD at 1.10 with 50:1 leverage → margin = $220

Compare Leverage Options

See how different leverage ratios affect the capital required for the same trade, so you can choose a level that fits your risk tolerance.

Example: Compare 10:1 vs 100:1 leverage on a $50,000 position

Frequently Asked Questions

What is margin in trading?: Margin is the amount of capital you need to open and maintain a leveraged position. It's a percentage of the total trade value, and the calculator helps you determine that amount based on your trade size and leverage.
How does leverage affect margin?: Higher leverage reduces the margin required, allowing you to control a larger position with less capital. For example, 100:1 leverage means you only need 1% of the trade value as margin.
What is the formula for margin?: Margin = (Trade Size × Price) / Leverage. This calculator uses that formula to give you the required capital instantly.

Tips & Common Mistakes

Tips

Always input the trade size in the same currency as the price to get accurate margin results.
Remember that margin is not a cost; it's a deposit that is returned when you close the trade, minus any losses.
Use the calculator to test different leverage levels before entering a trade to ensure you have sufficient funds.
Check your broker's margin requirements, as they may vary from the standard formula.

Common Mistakes to Avoid

Forgetting to convert trade size to the correct units (e.g., lots to units) before entering it.
Using the wrong price (e.g., bid vs ask) which can lead to inaccurate margin calculations.
Assuming that higher leverage is always better without considering the increased risk of liquidation.

Last updated: August 13, 2026