Position Size Calculator
EssentialCalculate the exact lot size to risk a specific percentage of your account. The most important tool for forex risk management.
Calculator Inputs
The pair you want to trade
$
Your total trading account balance
%
% of account to risk — professional traders use 1-2% max
pips
Distance from entry to your stop loss in pips
Current price of the selected pair
How position sizing works
Formula: Lot Size = Risk Amount ÷ (Stop Loss Pips × Pip Value)
Example: $10,000 account, 1% risk, 20 pip SL, EUR/USD at 1.0850:
Risk = $100 · Pip Value = $9.22 · Lots = $100 ÷ (20 × $9.22) = 0.54 lots
This means if price moves 20 pips against you and hits your stop loss, you lose exactly $100 (1% of account).
Enter your account details to calculate position size