Carat (metric) to Gram Converter
1 carat is exactly 0.2 grams. Convert carats (ct) to grams (g) below: type a value and the result updates as you type.
ct to g calculator
Result
Carat (metric) to Gram conversion
1 ct = 0.2 gone carat in grams
1 g = 5 ctone gram in carats
Carat (metric) (ct): Exactly 200 milligrams (metric carat).
Gram (g): One thousandth of a kilogram.
Source:Carat (metric): NIST Special Publication 811 (2008), Appendix B.8; Gram: SI Brochure, 9th edition (BIPM, 2019)
How to convert carats to grams
To convert carats to grams, multiply the number of carats by 0.2.
Formula
g = ct × 0.2
Examples
- 5 ct = 5 × 0.2 = 1 g
- 25 ct = 25 × 0.2 = 5 g
- 100 ct = 100 × 0.2 = 20 g
Carat (metric) to Gram conversion table
| Carat (metric) (ct) | Gram (g) |
|---|---|
| 0.1 ct | 0.02 g |
| 0.5 ct | 0.1 g |
| 1 ct | 0.2 g |
| 2 ct | 0.4 g |
| 3 ct | 0.6 g |
| 5 ct | 1 g |
| 10 ct | 2 g |
| 20 ct | 4 g |
| 25 ct | 5 g |
| 50 ct | 10 g |
| 100 ct | 20 g |
| 250 ct | 50 g |
| 500 ct | 100 g |
| 1000 ct | 200 g |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many grams are in one carat?
- One carat is exactly 0.2 grams.
- How do I convert grams to carats?
- To convert grams to carats, multiply the number of grams by 5. The formula is ct = g × 5.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 0.2 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a carat or a gram?
- A gram is 5 times larger than a carat. In other words, a carat is exactly 1/5 of a gram.