How to convert grams to carats
ct = g × 5
Example: 5 g × 5 = 25 ct
Grams to Carats table
| Grams (g) | Carats (ct) |
|---|---|
| 0.5 g | 2.5 ct |
| 1 g | 5 ct |
| 2 g | 10 ct |
| 3 g | 15 ct |
| 4 g | 20 ct |
| 5 g | 25 ct |
| 6 g | 30 ct |
| 7 g | 35 ct |
| 8 g | 40 ct |
| 9 g | 45 ct |
| 10 g | 50 ct |
| 15 g | 75 ct |
| 20 g | 100 ct |
| 25 g | 125 ct |
| 30 g | 150 ct |
| 40 g | 200 ct |
| 50 g | 250 ct |
| 75 g | 375 ct |
| 100 g | 500 ct |
| 250 g | 1,250 ct |
| 500 g | 2,500 ct |
| 1,000 g | 5,000 ct |
About these units
Grams (g): A gram is one thousandth of a kilogram, used for food, ingredients, jewellery and postage.
Carats (ct): The metric carat is exactly 200 milligrams (0.2 g). It is used to weigh diamonds and gemstones – not to be confused with karat, the purity of gold.
Frequently asked questions
How many carats are in 1 gram?
1 gram equals 5 carats (ct).
How do I convert g to ct?
Multiply the value in grams by 5. For example, 5 g × 5 = 25 ct.
How do I convert carats back to grams?
Multiply by 0.2 (or divide by 5). 1 ct = 0.2 g.
What is a gram?
A gram is one thousandth of a kilogram, used for food, ingredients, jewellery and postage.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every weight / mass unit at once? Use the Weight Converter.