Forex Calculators
Position Size Calculator
Turn your risk and stop-loss into an exact lot size
Decide how much of your account you are willing to lose on a trade, set where your stop-loss sits in pips, and this tool gives you the exact lot size to trade. Sizing every position to a fixed risk is the single habit that keeps a losing streak from ending your account.
For planning and education only. Results exclude broker spread, swap and commission, and are not financial advice.
How to use it
- 1Enter your account balance and the percentage of it you want to risk on this trade (1–2% is a common cap).
- 2Enter the stop-loss distance in pips — the gap between your entry and your stop.
- 3Enter the pip value for one standard lot in your account currency. For USD-quoted majors (EUR/USD, GBP/USD) on a USD account this is ≈10; otherwise use the Pip Value calculator.
- 4Read off the lot size — plus the equivalent in units and in mini/micro lots.
Frequently asked questions
How much should I risk per trade?
Most professionals cap risk at 1–2% of account equity per trade. At 1%, it takes a long, unlikely run of losses to do serious damage, which keeps you in the game long enough for your edge to play out.
What is the "pip value per standard lot"?
It is how much one pip of movement is worth, in your account currency, on a full 1.00 lot. For USD-quoted majors on a USD account it is about 10. For crosses or a non-USD account, work it out with the Pip Value calculator and paste it here.
Why is my lot size a fraction?
Position sizing rarely lands on a round number. Round down to your broker's smallest step (often 0.01 lot) — rounding down keeps your risk at or below your target rather than over it.