Lot Size Calculator
Calculate the correct lot size for any forex trade based on your account balance, risk tolerance, and stop loss distance in pips.
Inputs
$
%
$
Results
Risk Amount
$100.00
Standard Lots
0.20
Mini Lots
2.00
Micro Lots
20.00
Units
20,000
Understanding Forex Lot Sizes
In forex, a standard lot is 100,000 units of the base currency, a mini lot is 10,000, and a micro lot is 1,000. Choosing the right lot size ensures you never risk more than your plan allows on a single trade.
The standard rule: risk 1-2% of your account per trade. This calculator converts that percentage into the exact lot size based on your stop loss distance. A wider stop loss means a smaller lot size, and vice versa.
Use this alongside our position size calculator for non-forex markets, and track your results in the free trading journal.