Lot Size Converter

How to use this tool

1. Enter the standard-lot quantity you want to translate.
2. Confirm the contract size from the symbol specification.
3. Enter the current pip value for one standard lot in the account currency.
4. Add the planned stop distance to estimate stop-based dollar exposure.
5. Enter the platform’s permitted lot increment and use the rounded-down result.
6. Verify the final lot size and margin in the platform’s order preview.

See the calculation in context

At a 100,000-unit contract size, 0.50 standard lots equals 50,000 units, five mini lots, or 50 micro lots. At $10 per pip per standard lot, estimated exposure is $5 per pip.

Calculation method

Units = standard lots × units per standard lot. Mini-lot equivalent = standard lots × 10. Micro-lot equivalent = standard lots × 100. Estimated pip exposure = lots × pip value per standard lot.

Common mistakes

1. Assuming pip value is always $10
2. Confusing lots with units
3. Using a JPY-pair pip convention for a non-JPY pair or vice versa
4. Ignoring account-currency conversion
5. Rounding up to the nearest lot step
6. Treating estimated stop loss as guaranteed

Questions and answers