Gold Contract Size Guide

XAUUSD quotes a price in US dollars per troy ounce. The number of ounces represented by one lot is a broker contract specification.

Price movement and position units

Underlying ounces = lots × ounces per lot. If a broker specifies 100 oz per lot, 0.10 lot represents 10 oz. A $1/oz favorable move gives $10 gross profit on that position. A 10 oz-per-lot contract instead gives $1 for the same lot quantity and price movement.

Verify before calculating

Check contract size, minimum volume, volume step, maximum volume, quote precision, margin rules and trading costs in your broker’s instrument specifications. Do not infer contract size from a chart’s number of decimal places.

Use the right inputs

Our default 100 oz is an editable example. Open the XAUUSD Lot Size Calculator and enter your own specifications. Use the Gold Pip & Point Value Calculator for a user-defined price increment.