Position size calculator

How it works

Position size = amount at risk ÷ (stop-loss distance in pips × pip value per standard lot). A standard lot is 100,000 units of the base currency; most brokers let you trade mini (10,000) and micro (1,000) lots.

Brokers only accept sizes in fixed steps, usually 0.01 lots. The calculator rounds the exact size down to your broker's step and shows what that rounded size really risks, which is never more than your budget. Rounding to the nearest step instead could risk more: with 1,000 at 1% and a 60-pip stop, the exact size is 0.0167 lots, and 0.02 lots would risk 12, not 10.

Example, with hypothetical numbers: a 10,000 account risking 1% has 100 at risk. With a 25-pip stop and a pip value of 10 per standard lot, the position is 100 ÷ (25 × 10) = 0.40 lots, or 40,000 units.

Pip value per standard lot

One pip is 0.0001 for most pairs and 0.01 for yen pairs. For a standard lot, that is 10 units of the quote currency (1,000 for yen pairs), converted into your account currency. Examples for a USD account, at illustrative rates:

Your broker's platform shows the exact pip value for each instrument; use that figure for real trades. A stop-loss isn't guaranteed: in fast markets or over a weekend the price can gap past it, so the loss can be larger than planned.