Gram to Carat (metric) Converter
1 gram is exactly 5 carats. Convert grams (g) to carats (ct) below: type a value and the result updates as you type.
g to ct calculator
Result
Gram to Carat (metric) conversion
1 g = 5 ctone gram in carats
1 ct = 0.2 gone carat in grams
Gram (g): One thousandth of a kilogram.
Carat (metric) (ct): Exactly 200 milligrams (metric carat).
Source:Gram: SI Brochure, 9th edition (BIPM, 2019); Carat (metric): NIST Special Publication 811 (2008), Appendix B.8
How to convert grams to carats
To convert grams to carats, multiply the number of grams by 5.
Formula
ct = g × 5
Examples
- 5 g = 5 × 5 = 25 ct
- 25 g = 25 × 5 = 125 ct
- 100 g = 100 × 5 = 500 ct
Gram to Carat (metric) conversion table
| Gram (g) | Carat (metric) (ct) |
|---|---|
| 0.1 g | 0.5 ct |
| 0.5 g | 2.5 ct |
| 1 g | 5 ct |
| 2 g | 10 ct |
| 3 g | 15 ct |
| 5 g | 25 ct |
| 10 g | 50 ct |
| 20 g | 100 ct |
| 25 g | 125 ct |
| 50 g | 250 ct |
| 100 g | 500 ct |
| 250 g | 1250 ct |
| 500 g | 2500 ct |
| 1000 g | 5000 ct |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many carats are in one gram?
- One gram is exactly 5 carats.
- How do I convert carats to grams?
- To convert carats to grams, multiply the number of carats by 0.2. The formula is g = ct × 0.2.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 5 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a gram or a carat?
- A gram is 5 times larger than a carat. In other words, a carat is exactly 1/5 of a gram.