Free forex calculators
Lot size decides how much a losing trade costs you. These calculators work it out from your balance, your risk and your stop, for currency pairs, gold and prop firm accounts.
Position size calculator
Lot size for any forex pair from your balance, risk and stop loss, with pip value and margin.
Open →Gold (XAUUSD) lot size calculator
XAUUSD lot size from your risk and stop distance in dollars, with dollar risk per lot and margin.
Open →Prop firm drawdown calculator
See how much you can still lose today and overall, and where to set your EA's equity guard.
Open →
Which calculator do you need?
- Trading a currency pair? The position size calculator turns your risk and stop loss in pips into a lot size, and converts pip values when the pair is quoted in another currency.
- Trading gold? The gold lot size calculator works in dollars of price movement, so it gives the same answer whatever your broker calls a pip.
- On a prop firm challenge? The prop firm drawdown calculator shows how much you can still lose today and overall, and where to set an EA’s equity guard.
All three run in your browser. Nothing you type is stored or sent anywhere; the position size calculator only downloads the day’s exchange rates.
Setting up an expert advisor? Our help center covers installing an EA, loading set files and fixing an EA that won’t trade.