Gold Purity Calculator

Gold is said to be 100% pure when it comprises 24 karats. Gold jewellery is usually made from something other than pure gold, as it is too soft and can bend easily. To make it harder and more suitable for making jewellery, it is mixed with other metals, such as zinc, copper, silver, etc. Our online gold purity calculator will answer your calculation and conversion needs quickly. With this calculator, you can calculate the percentage of pure gold by entering the karat value visible on your gold jewellery piece. Use the calculator to enter any Karat value from 1 to 24 and convert it into a percentage of pure gold. 

 To know more about how the amount of pure gold in your jewellery is calculated, firstly, you need to know its weight and karat.

 Know the Karats of your Gold Jewellery

Determine the karat of your gold jewellery by looking at its karat marks, which are usually stamped in places that are not readily visible, like the inner side of a ring or a bangle. And Karats are denoted by the sign K or Kt. You will see the standard karat numbers 10K, 14K, 18K, 20K, and 22K.

 Another way some jewellers mark their gold jewellery is by using parts-per-thousand numbers instead of karats. This parts-per-thousand value can be converted to a percentage by dividing by 10. For instance, the parts-per-thousand mark 585 means that the jewellery contains 58.5% pure gold. To convert parts per thousand value into karats, you need to divide it by 1000 and multiply by 24. For example, when we convert the mark value 585 by the process mentioned above, we get the final value of 14.04, equal to 14 karats.

 Also, explore our newly launched gold coins online in 22K and 24K. 

 Convert Gold Karats to a Percentage

Once you know the karats of your gold jewellery, it's best to convert them to a percentage to figure out what part of your gold alloy is pure gold.

This simple calculation is done by dividing the karat number of your jewellery by 24 and then multiplying the result by 100.

 For example, if you know that a gold item is 18 karats, divide 18 by 24. You have 0.75. And multiplied by 100 is equal to 75% of gold content.

 Weigh your Gold Jewellery

To weigh your gold, you will need a sensitive scale. Normally gold is measured in grams, but many jewellers and gold dealers use troy ounces and pennyweights. So, in some cases, you might need to convert your measurements to these units. Never weigh your gold jewellery and any diamonds or other gemstones studded on it - you only need the weight of the gold alloy parts.

And remember to learn about the current gold price in India before buying any gold item.

 The Final Calculation: To know the amount of pure gold in your jewellery

So finally to determine the amount of pure gold in your jewellery, you need to multiply the weight of your latest jewellery purchases in grams by its purity percentage.

For example, if you have an 18K gold chain that weighs 8 grams, knowing that 18 karats equal to 75% of purity, you can calculate the pure gold in the chain which is 6 grams.