A Gold Calculator is an online tool that helps you calculate the value of gold quickly and easily. Instead of doing complex math, you can use a Gold Calculator to get instant results. It works based on three main things: gold weight, gold purity, and current gold rate. Gold purity is usually measured in karats like 24K, 22K, 18K, and 14K. Pure gold is 24K, but most jewelry is 22K or 18K because pure gold is soft. When you use a Gold Calculator, you need to enter the correct karat value to get an accurate result.