Carat to Gram Converter
Convert carat to gram instantly with this free calculator. 1 carat = 0.2 grams, so you can quickly switch from carats (ct) to grams (g) using the formula g = ct × 0.2. Use the converter, conversion table, worked examples, and FAQs below.
Carat to gram converter
Quick Answer
1 Carat Is Equal to How Many Grams?
1 carat is equal to 0.2 grams. If you are asking how many grams are in a carat, the answer is always the same because the metric carat is a fixed unit of mass used for gemstones.
That means 5 carats = 1 gram, 10 carats = 2 grams, and 25 carats = 5 grams. For a quick carat to gram conversion, multiply the carat value by 0.2.
Quick Reference
Carats to Grams Conversion Table
Use this carat to gram conversion table to check common values at a glance. To convert ct to grams, multiply the number of carats by 0.2.
| Carats (ct) | Calculation | Grams (g) |
|---|---|---|
| 0.25 ct | 0.25 × 0.2 | 0.05 g |
| 0.5 ct | 0.5 × 0.2 | 0.1 g |
| 0.75 ct | 0.75 × 0.2 | 0.15 g |
| 1 ct | 1 × 0.2 | 0.2 g |
| 1.5 ct | 1.5 × 0.2 | 0.3 g |
| 2 ct | 2 × 0.2 | 0.4 g |
| 2.5 ct | 2.5 × 0.2 | 0.5 g |
| 3 ct | 3 × 0.2 | 0.6 g |
| 4 ct | 4 × 0.2 | 0.8 g |
| 5 ct | 5 × 0.2 | 1 g |
| 6 ct | 6 × 0.2 | 1.2 g |
| 7.5 ct | 7.5 × 0.2 | 1.5 g |
| 8 ct | 8 × 0.2 | 1.6 g |
| 9 ct | 9 × 0.2 | 1.8 g |
| 10 ct | 10 × 0.2 | 2 g |
| 12 ct | 12 × 0.2 | 2.4 g |
| 15 ct | 15 × 0.2 | 3 g |
| 20 ct | 20 × 0.2 | 4 g |
| 25 ct | 25 × 0.2 | 5 g |
| 50 ct | 50 × 0.2 | 10 g |
| 100 ct | 100 × 0.2 | 20 g |
How It Works
How to Convert Carats to Grams
Converting carats to grams is simple because the relationship is fixed. One metric carat always equals 0.2 grams.
Carat to Gram Formula
The standard formula for carat to gram conversion is:
To convert grams back to carats, use the reverse formula: ct = g × 5.
Step-by-Step Conversion
Enter the carat value
Start with the number of carats you want to convert, such as 1 ct, 2 ct, 5 ct, or 10 ct.
Multiply by 0.2
Multiply the carat value by 0.2 to get the equivalent weight in grams.
Write the answer in grams
Your result is the final value in grams (g).
Carats vs Grams
What Is the Difference Between Carats and Grams?
A carat (ct) and a gram (g) are both units of mass, but they are used in different contexts. Carats are used mainly for gemstones, while grams are used more broadly in everyday and metric measurements.
The standard relationship is simple: 1 carat = 0.2 grams. That means a carat is smaller than a gram, and 5 carats = 1 gram.
Do not confuse carat with karat. Carat measures gemstone weight, while karat measures gold purity.
Worked Examples
Common Carat to Gram Examples
Here are some of the most common carat to grams conversions people search for.
1 ct to g
1 ct = 0.2 g. One carat is equal to two-tenths of a gram.
2 ct to g
2 ct = 0.4 g. Multiply 2 by 0.2.
5 ct to g
5 ct = 1 g. Five carats equals exactly one gram.
10 ct to g
10 ct = 2 g. Ten carats equals two grams.
25 ct to g
25 ct = 5 g. Twenty-five carats converts to five grams.
50 ct to g
50 ct = 10 g. Fifty carats is equal to ten grams.
Reverse Formula
Gram to Carat Conversion
If you want to convert gram to carat, use the reverse formula: ct = g × 5.
For example, 1 gram = 5 carats, 2 grams = 10 carats, and 5 grams = 25 carats. If you need that calculation often, use the dedicated grams to carats converter.
FAQ
Frequently Asked Questions
Quick answers to common questions about carat to gram conversion.