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How Many Grams Make 1 Carat of Gold?

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23 May 2026 |6 Minutes
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Gold has long been one of the most trusted choices for both investment and jewellery in India. When buying gold, you’ll often come across the terms gram and karat. While grams measure the weight of gold, karats indicate its purity. Many buyers, however, find these terms confusing, especially when trying to understand how they affect the final price. This article explains the difference between grams and karats, and how each plays a role in determining the value of gold in India.

Understanding the Difference Between Gram and Karat

gold-carat

Before discussing purity and pricing for gold, you must know that grams and karats represent two distinct characteristics.

Gram Measures Weight
A gram is a recognised unit of weight. In India, when someone sells gold, it is measured in grams. Each item will be weighed to determine its value. Regardless of the level of purity of a gold item, the higher the weight of the gold item, the higher the item's price.

Karat Measures Gold Purity
A karat indicates the purity level of gold. It tells you how much pure gold is present in the alloy compared to other mixed metals.

●    24-karat gold contains almost pure gold
●    22-karat gold contains slightly lower purity
●    18-karat gold contains more mixed metals
So, grams represent weight, while karats represent purity.

Can Gold Karats Be Converted into Grams?

One cannot simply convert karats to grams of gold because they represent two different items.
In gold jewellery:

●    Gram = Weight
●    Karat = Purity

When dealing with stones, including diamonds, one carat generally equals 0.2 grams or 200 gm:

1 Carat = 0.2 Grams or 200 Milligrams (mg)

In gold jewellery, karat refers to purity, not weight. Therefore, gold karats cannot be directly converted into grams.
For example:
●    1 Gram of 24 Karat gold = 100% gold content.
●    1 Gram of 18 Karat gold = 75% gold content.
In this last example, 1 gram 18K (18 Karat) = 0.75 Grams of Gold.

The remaining portion consists of other metals such as copper, silver, or zinc.

What Does Karat Mean in Gold?

The karat (or 'K') system indicates the purity of gold and is a 24-part scale. The purity of a given amount of gold is directly equivalent to the purity of pure 24k gold (100% Pure).

When determining purity level, you can use this equation:
Gold Purity Percentage = (Karat ÷ 24) × 100
Using this formula:
●    24K gold = 99.9% pure
●    22K gold = 91.6% pure
●    18K gold = 75% pure
●    14K gold = 58.5% pure

The higher the karat value, the higher the purity of gold within that item.

Gold Purity Levels Explained

Gold can have different purity levels, based on its usage in a piece of jewellery or as an investment product.

Karat

Purity Level

Gold Content

Common Usage

24K

99.9%

Pure gold

Coins and bars

22K

91.6%

Gold mixed with alloys

Traditional jewellery

18K

75%

Moderate alloy mix

Diamond jewellery

14K

58.5%

Higher alloy content

Daily-wear jewellery

10K

41.7%

More durable alloy

Less common jewellery

 

Why is Gold Mixed with Other Metals?

Pure gold is soft and highly malleable, making it unsuitable for most everyday jewellery. Pure gold jewellery can easily bend or scratch.

To improve the strength of gold jewellery, gold is alloyed with other metals to create a stronger piece.

Common Metals Mixed with Gold

Different metals are added for different purposes:

●    Copper, which improves the hardness of the gold. 
●    Silver, which adds lustre and brightness. 
●    Zinc, which helps add strength. 
●    Nickel, which adds hardness.

Alloying gold with other metals creates an alloy that performs better as a piece of jewellery than pure gold.

Why 22K and 18K Gold Are Popular

22K and 18K are common choices in India because each represents a good balance between strength and purity.

22K Gold
22-karat gold is a good choice for most traditional Indian-style gold jewellery because it offers a good amount of gold and sufficient strength to be a functional piece. 

Some common uses include:
●    Chains 
●    Bangles 
●    Earrings 
●    Bridal jewellery

18K Gold
The increased number of alloy metals in 18-karat gold allows for the creation of stronger pieces, so 18-karat gold is generally preferred for use in:

●    Diamond jewellery 
●    Wedding bands 
●    Intricate jewellery designs 

The extra strength of 18-karat gold provides more support, so that stones are held securely in place.

How Karat Affects Gold Prices in India

The price of gold is primarily determined by:
●    The amount of weight in grams
●    The karat value
Due to the higher proportion of pure gold in higher karat jewellery, higher-purity gold is generally more expensive. Even if two similar jewellery products weigh the same, the purer one will typically be priced higher.

Other Factors Affecting Gold Prices

The price of jewellery includes other factors, including:
●    Making costs
●    GST
●    Wastage Charges
●    Stone charges

As a result, you will often see jewellery priced differently from the cost of the gold in the same item on a given day.

Importance of Hallmark and Purity Stamps

Gold jewellery usually carries purity markings that help buyers verify authenticity.

Common Gold Stamps
Stamps found on jewellery may include:
●    24K
●    22K916
●    18K750
These numbers on stamps indicate the level of purity.

For example:
●    916=91.6 % purity
●    750=75% purity

BIS Hallmark Certification
In India, BIS hallmarking certifies the purity of gold jewellery under standards set by the Bureau of Indian Standards (BIS).

Different Uses of Gold Based on Karat Value

Different gold purity levels are suitable for different purposes.

24K Gold
The vast majority of 24K gold finds its use in the following products:
●    Gold bars,
●    Investment coins
●    Digital gold investments
Due to being too soft, it's also seldom used for making jewellery.

22K Gold
22K gold is commonly found in:
●    Traditional Indian jewellery
●    Bridal ornaments
●    Worn pieces of heavy jewellery

18K and 14K Gold
Both 18 and 14K gold will typically be used for:
●    Fashion jewellery
●    Diamond jewellery
●    Modern style
●    Everyday wear
Their durability makes them ideal for daily use.

Tips to Make Smart Gold Purchases

Understanding the quantity and quality of the gold being purchased can provide buyers with a better experience when making a buy.

Check Purity Before Buying
Make sure that you verify the karat count and have a hallmark certification before making a purchase.

Compare Gold Rates
Check gold prices daily from several jewellers before making a purchase.

Understand Making Charges
Jewellery prices can be affected by manufacturing costs. Some jewellers’ prices include the charges for creating the jewellery, and the making charges can differ from one jeweller to another.

Buy from Trusted Jewellers
Buy from only reputable jewellers that can provide complete bills and hallmark certified products.

Keep Purchase Documents Safe
Keeping the bills and paperwork will help you if you need to sell the gold, exchange the gold, or obtain a loan against the gold.

Gold Purity and Gold Loans

When you apply for a gold loan, the amount of gold you borrow will depend on the purity of the gold you are using as collateral.

The higher the purity of the gold, the higher the eligible amount you have for the loan, since this means there is more pure gold. Lenders.

Lenders usually evaluate:
●    Gold purity
●    Weight in grams
●    Current market price

Keeping gold purchase documents and hallmark certifications can simplify valuation.

Read Also: What is the Difference Between 22 Karat and 24 Karat Gold?

To Conclude

When buying or selling gold, grams and karats describe the weight and purity of the gold, respectively. Therefore, there is no direct conversion from karat (purity) to grams (weight), as they are different measurements. Understanding these two measures allows buyers to make accurate assessments of gold prices, jewellery quality, and investment value. 

To ensure you are purchasing quality gold, verify its purity, look for hallmark certification, and examine the total cost of the gold. If you need financial help without selling your gold, consider Poonawalla Fincorp’s Gold Loan. Apply now and get loans up to ₹50 Lakh.

FAQs

How much is 1 karat of gold in grams?
Karat measures gold purity, while grams measure weight. Since they represent different characteristics, they cannot be directly compared or converted.

Is 24K gold heavier than 18K gold?
24K gold is not inherently heavier than 18K gold. If two items have the same weight in grams, they weigh the same regardless of their purity level.

Why is 22K gold commonly used for jewellery?
22K gold offers a balance between purity and durability, making it suitable for traditional jewellery. Unused metals will add strength to the gold and lay down the desired characteristics needed for use in jewellery. 

What does 916 mean on gold jewellery?
916 indicates that the gold contains 91.6% pure gold, which corresponds to 22K gold.

Does higher karat gold cost more?
Yes. Higher-karat gold contains more pure gold, making it more expensive than lower-karat gold.
 

Table of Content
  • Understanding the Difference Between Gram and Karat
  • Can Gold Karats Be Converted into Grams?
  • What Does Karat Mean in Gold?
  • Gold Purity Levels Explained
  • Why is Gold Mixed with Other Metals?
  • Why 22K and 18K Gold Are Popular
  • How Karat Affects Gold Prices in India
  • Why 22K and 18K Gold Are Popular
  • Importance of Hallmark and Purity Stamps
  • Different Uses of Gold Based on Karat Value
  • Tips to Make Smart Gold Purchases
  • Gold Purity and Gold Loans
  • To Conclude
  • Frequently Asked Questions
Disclaimer

We take utmost care to provide information based on internal data and reliable sources. However, this article and associated web pages provide generic information for reference purposes only. Readers must make an informed decision by reviewing the products offered and the terms and conditions. Loan disbursal is at the sole discretion of Poonawalla Fincorp.

*Terms and Conditions apply
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