Position Size Calculator

Calculate exactly how many lots to trade. Forex prices are pulled live - you don't enter anything manually.

Position Size Calculator
Forex & Indices · Live prices
LIVE
% of balance

Fill in the fields
and hit Calculate
to see your results.

How It Works

The formula behind the calculator, explained simply.

01
Define Your Risk
Enter your account balance and how much you're willing to risk. Professional traders generally risk between 0.5% and 2% per trade.
02
Set Your Stop Loss
Enter the distance in pips (or points for indices) between your entry and stop loss - derived from your technical analysis.
03
Get Your Exact Lot Size
The calculator divides your risk amount by (Stop Loss × Pip Value) and returns exactly how many lots to open.