Gold Calculator
Calculate the value of gram gold, sovereign coins and bullion by karat using live spot prices. Convert a gold amount into USD, EUR, GBP and TRY, or see how much gold a sum buys.
22K — Sovereign / coin gold (91.67% pure)
Gram Gold — 1 gram (22K)
22K — Sovereign / coin gold (91.67% pure)
22K — Sovereign / coin gold (91.67% pure)
* Prices are based on daily-updated international market data. Dealer and bank buy/sell prices may differ due to margins.
What Is a Gold Calculator?
A gold calculator — also a gold price calculator and gold value calculator — works out the worth of gold by weight and purity (karat) using the live international spot price (XAU). Enter grams of gold, choose a karat (22K, 24K, 18K or 14K), and the tool shows the value in your chosen currency. If you have ever wondered how much is my gold worth, this gold worth calculator answers it instantly. It also values sovereign coins, lets you mix coins and grams, and works in reverse — telling you how many grams a given amount of money buys.
How Is the Gram Gold Price Calculated?
The gram gold price of pure (24K) gold comes from the spot price per troy ounce:
Gram price (24K) = Troy ounce price / 31.1035
For lower karats, multiply by the purity factor. The tool applies this automatically once you pick a karat.
Gold Karat Calculator: Purity Table
As a gold karat calculator, the tool applies the correct purity factor for each karat. The headline 24K gold price is the pure-gold gram value; every other karat is a fraction of it, as the table shows:
| Karat | Purity | Factor | Typical Use |
|---|---|---|---|
| 24K | 99.9% | 0.999 | Pure bullion, bars |
| 22K | 91.67% | 0.9167 | Sovereign, Krugerrand, coins |
| 18K | 75% | 0.75 | Fine jewelry |
| 14K | 58.33% | 0.5833 | Everyday jewelry |
Coin Weights
The tool includes common 22K coin weights so you can value them directly:
- Quarter Sovereign: ~1.997 g (22K)
- Half Sovereign: ~3.994 g (22K)
- Sovereign: ~7.988 g (22K)
Use the Mixed Coins mode to add several coins plus loose grams and get a single total. The value is always based on the live spot price for the karat you select.
Three Modes: Gold to Money, Mixed Coins and Money to Gold
- Gold → Money: Enter grams or a coin and see its value in your chosen currency.
- Mixed Coins: Add sovereigns, fractional coins and loose grams together for a combined total.
- Money → Gold: Enter an amount and see how many grams (and coins) it buys at the current price.
Valuing Jewelry by Karat
Jewelry is rarely pure metal, so its worth depends heavily on its karat stamp. A piece marked 18K is 75% pure and a 14K piece only 58.33%, which means two items of the same weight can differ in value by a wide margin. To estimate what your jewelry is worth, find the karat mark (24, 22, 18 or 14), weigh the piece in grams, and enter both into the tool — it returns the underlying metal value at today's spot price. Remember that a jeweler also pays for stones, design and labour separately, and usually buys back at the scrap-metal value rather than the retail price, so the figure here is the fair metal worth to use as your baseline.
Bullion Value Calculator: Bars and Coins
Used as a bullion value calculator, the tool values investment-grade bars and coins at the live spot price. Bullion is almost always 24K (99.9%) or 22K (91.67%), so its worth tracks the market closely with very little premium over the metal content. To value a bar, enter its weight in grams and select 24K; to value a coin, choose the coin or enter its 22K gram weight. Because bullion carries a small premium over spot, the figure here is the underlying metal value — useful for comparing dealer quotes and knowing the true worth of what you hold.
Why Do Gold Prices Change?
The spot price of gold moves constantly. Understanding the drivers helps you read your result in context:
- The US Dollar: Gold is priced in dollars, so a weaker dollar usually lifts the gold price and a stronger dollar pushes it down.
- Interest rates: When central banks raise rates, non-yielding gold becomes relatively less attractive; rate cuts tend to support it.
- Inflation and risk: Gold is a traditional hedge, so demand often rises during high inflation or geopolitical uncertainty.
- Local currency: Your local gram price also depends on your currency's exchange rate against the dollar, which is why prices differ by country.
This is why the value the calculator shows can move from day to day even when your gold's weight has not changed at all.
Spot Price vs Dealer Price
This calculator uses the international spot market (XAU) — the benchmark price for pure metal. A jeweler or dealer typically charges 2-5% more because their price includes making charges, dealer margin, the bid-ask spread and local tax. So treat the result as a reference value; for an exact buy or sell price, check your local dealer or bank.
How to Use This Gold Calculator
Pick a karat (22K, 24K, 18K or 14K) and a mode. In Gold to Money, choose gram or a coin, enter the amount, pick a result currency (USD, EUR, GBP or TRY) and calculate. Live spot prices load automatically; if unavailable, you can enter the gram price manually. The result shows the total value, weight, purity and gram price. See the FAQ below for the gram-price formula and coin weights.
Frequently Asked Questions About the Gold Calculator
Gram gold price = Troy ounce price / 31.1035. This gives the price of one gram of 24K (pure) gold. For 22K gold, multiply by 0.9167; for 18K by 0.75; for 14K by 0.5833. This tool uses live XAU spot data and applies the karat factor automatically.
24K gold is 99.9% pure and has the highest gram price; it is used in pure bullion and some coins. 22K gold is 91.67% pure and is the standard for many gold coins such as the Sovereign and Krugerrand. The 22K gram price equals the 24K price x 0.9167.
A full gold Sovereign weighs about 7.99 grams of 22K gold (containing roughly 7.32 g of pure gold). A Half Sovereign is about 3.99 g and a Quarter Sovereign about 2.0 g. The tool uses these weights and your selected karat to value the coins.
This tool uses the international spot market (XAU). A dealer's buy/sell prices are usually 2-5% higher because they include making charges, dealer margin, the bid-ask spread and tax. The tool gives a general reference value; for an exact price, check your local dealer.
Use the Money to Gold mode: enter an amount and currency, choose a karat, and the tool divides by the gram gold price to show how many grams (and how many sovereigns) you can buy at the current spot price.
You can calculate 24K (99.9% pure), 22K (91.67%), 18K (75%) and 14K (58.33%). Select the karat and the tool applies the correct purity factor to the spot gram price.
Couldn't find the answer you were looking for?
Explore all our tools and get the fastest answer to your question.