1. The gold price calculator only provides an estimated value of your gold.
2. The commonly used units are troy ounce, gram, and kilogram. The conversion among those units are as below:1 troy ounce = 31.1034768 grams, or 0.0311034768 kilograms.
3. The purity of gold. Generally, the purity of gold bullion is up than 99%; gold coin and gold jewelry are commonly gold alloy, they may be 24k, 22k, 18k, 14k, 10k, or 8k, etc. Therefore, the prices of gold bullion is higher than gold coin and gold jewelry (excluding the costs of craft and design). Additional, a unit karat of gold is equal to 1/24 part (4.1667%).