Forex Position Size Calculator

Professional lot size calculator for all major and minor Forex pairs. Manage your risk per trade with surgical precision, whether you are trading GBPUSD, EURUSD, or JPY pairs.

The Formula

Position Size = (Account Balance × Risk%) / (Stop Loss in Pips × Pip Value)

Practical Example

For a $10,000 account risking 1% ($100) with a 10-pip stop loss on currency pairs like GBPUSD or USDCHF or else, your calculated lot size would be 1.00 standard lot.

Frequently Asked Questions

1. What is the standard lot size for Forex?

A standard lot is 100,000 units of the base currency. Our calculator uses this as the default for pairs like EUR/USD and GBP/USD.

2. How does the tool handle JPY pairs?

For JPY pairs (e.g., USDJPY, GBPJPY), 1 pip is the 2nd decimal (0.01). The calculator detects this based on your input to ensure accurate lot sizing.

3. Can I calculate risk for exotic currency pairs?

Yes, as long as you know the pip value or use our 'Advanced Settings' to define custom parameters for any currency pair.

4. Is this calculator suitable for scalping?

Definitely. Scalpers with tight stop losses need extreme precision in lot sizing to avoid over-leveraging, which is exactly what this tool provides.

5. Does this tool account for account currency?

The calculation assumes your risk amount is in the same currency as your account balance (usually USD) for the most straightforward results.