Free calculator

Lot Size Calculator for Seamless Trade Execution

Turn your target dollar amount into the exact lot size. No mental math required.

When every pip counts, over- or under-shooting your trade volume can derail your strategy.

This calculator removes the guesswork by translating your desired exposure into the precise lot size, giving you confidence your order matches your plan.

How it works.

1

Enter how much capital (in currency) you want committed to the trade.

2

Select the trading pair you're working with.

3

Input your leverage to see margin-adjusted sizing. *Optional

4

Calculate to get lot size and unit breakdown instantly.

Lot Size Calculator

Use the Lot Size Calculator to help you determine the exact amount of currency units to buy or sell per trade, based on your risk management rules and account balance.

Money at risk

0.00 USD

Lots

0.000

Position size

0 units

Frequent questions.

A standard lot is 100k units of the base currency, mini is 10k, and micro is 1k. This tool displays all three so you can pick what fits your platform or preference.