Free tool
Lot size
calculator
Risk a fixed percent on every trade. Enter your balance, risk and stop, and get the lot size, rounded down so you never risk more than planned.
How far price moves from your entry to your stop loss (entry 2400.00, stop 2395.00 = 5.00). Uses the common contract size (100 per lot); some brokers differ, so check yours.
Position size
0.10lots
- Risk target
- $50.00
- Actual risk
- $50.00
- Risk per 1.00 lot
- $500.00
- Per 0.01 lot
- $5.00
How it works
Risk in dollars is your balance times your risk percent. Each instrument has a value per 1.00 lot for every unit of price movement, so the money you risk per lot is your stop distance times that value. Divide the two and round down to the nearest 0.01 lot.
Example: on a $10,000 account risking 0.5%, you risk $50. On gold, a $5.00 stop costs $500 per lot, so the size is 0.10 lots.
Why round down
Prop firm rules care about the worst case. Rounding up even 0.01 lot on a wide stop can be the difference between a normal loss and a broken daily limit.
Free download
Know your rules.
Keep your account.
Set up your firm's rules in a minute. Your journal stays on your computer.