Lot Size / Position Size Calculator
Calculate how many lots to trade so that, if your stop-loss is hit, you risk a fixed share of your account. The cornerstone of staying inside a prop firm's drawdown rules.
Risk setup
Instrument
How this Lot Size / Position Size calculator works
- Enter your account balance, currency, and how much you are willing to risk on the trade.
- Enter the stop-loss distance in pips.
- Pick the instrument, or enter custom contract specs for an exotic instrument.
- The calculator divides your risk amount by stop-loss distance times pip value per lot.
- The result is shown in standard lots, units, mini lots, and micro lots.
Why it matters for challenge-fit
Most traders pick a challenge based on price or name. But a challenge that doesn't fit your risk per trade will drain your drawdown buffer before you reach the profit target.
Risking 2% per trade on a challenge with a 5% max drawdown? Three losing trades in a row and you're already at the limit.
Enter your real numbers and see which challenges have enough room for the way you actually size positions before you pay for one that doesn't.
Disclaimer
Current prices are illustrative starting points, since live quotes change constantly and depend on the data provider. Always confirm against your platform before trading.