Gold Price Per Gram

Why price per gram, not price per ounce

Gold is quoted on world markets in US dollars per troy ounce, but almost nobody weighing a ring or a chain on a home scale is dealing in ounces. A gram is the unit most kitchen and jewelry scales actually display, and it's small enough to give a meaningful number for a single piece of jewelry rather than a fraction of an ounce. This page converts the troy ounce spot price down to grams for you, and does it separately for each karat, since a gram of 24K gold and a gram of 10K gold are worth very different amounts.

How the per-gram price is calculated

One troy ounce equals 31.1034768 grams exactly. Dividing the live spot price by that figure gives the price of one gram of pure (24K, 99.9%) gold. Every other karat's per-gram price is that pure-gold figure multiplied by the karat's purity fraction: 75% for 18K, 58.3% for 14K, 41.7% for 10K, and so on. That is exactly what the table above does automatically every time the live price updates.

Worked example

At a spot price of $4,600 per troy ounce, one gram of pure 24K gold is worth $4,600 divided by 31.1034768, or about $147.89. A gram of 18K gold (75% pure) at the same spot price is worth 75% of that, about $110.92. A gram of 10K gold (41.7% pure) is worth about $61.67. Multiply any of these by however many grams you have, or just use the lookup tool below and let it do the multiplication.

Typical weights of common jewelry, for context

If you don't have a scale handy, these are rough typical weights for common pieces, useful for a ballpark estimate only, always weigh the actual item before relying on a number.

Per-gram price versus what you'll be offered

The per-gram prices on this page are melt value, the market value of the pure gold itself. A buyer, whether a pawn shop, jeweler or online gold-buying service, will typically offer somewhat less than melt value to cover their own margin. See the full gold calculator page for more detail on what a realistic offer looks like relative to melt value.

How much a small change in the spot price moves your total

Because gold moves in dollars per troy ounce, a small-looking swing in the headline spot price turns into an even smaller per-gram change, but it still adds up on a heavier item. A $50 move in the troy ounce price, roughly 1% at a $4,600 spot price, shifts the pure-gold per-gram price by only about $1.61. On a 5 gram 14K item (58.3% purity), that same $50 swing changes the value by less than a dollar. On a full troy ounce of 24K bullion, the same $50 move is a full $50 difference, since a troy ounce of 24K gold IS the unit the spot price quotes. The heavier and purer the item, the more a given dollar move in spot price matters to its value.

Converting between grams and other weight units

If your scale or a quote you've received uses a different unit than grams, these are the exact conversions this page and the full gold calculator use internally.

The avoirdupois ounce (the everyday ounce used for food, body weight and most non-precious-metal goods) is about 10% lighter than a troy ounce. If a scale or an online source gives you a weight in "ounces" without specifying troy, double-check which one is meant before converting, the 10% gap is enough to noticeably change your result.