Lot size calculator
The exact position size for your risk and your stop loss, in forex, gold, indices and crypto.
- ECBOfficial exchange rates every day
- CMEOfficial futures specifications
Position size
0.00 lots
Exact lot size —
- Actual risk
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- Target profit
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- Pip value (1 lot)
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- Required margin
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Trade diagram
Live market
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How it is calculated
Calculator by instrument
Each instrument has its own page with the pip value, examples and the most common settings.
Metals
Forex
- EURUSDEuro / US Dollar
- GBPUSDBritish Pound / US Dollar
- USDJPYUS Dollar / Japanese Yen
- AUDUSDAustralian Dollar / US Dollar
- USDCHFUS Dollar / Swiss Franc
- USDCADUS Dollar / Canadian Dollar
- NZDUSDNew Zealand Dollar / US Dollar
- EURGBPEuro / British Pound
- EURJPYEuro / Japanese Yen
- GBPJPYBritish Pound / Japanese Yen
Indices
More tools
For trading futures and for keeping your prop firm account alive.
What lot size is and why it matters
A lot is the unit of size of a trade. In forex, 1 standard lot is 100,000 units of the base currency; 0.10 is a mini lot and 0.01 a micro lot. In gold, 1 lot is usually 100 ounces.
Choosing the right lot size is what turns a stop loss into a controlled loss. If your stop is 50 pips away and you want to risk $100, you need each pip to be worth $2: on EURUSD, 0.20 lots.
The formula is always the same: lots = risk ÷ (stop distance × value per lot). The calculator applies it with each instrument’s contract size and converts to your account currency.