Back to Weight & Mass
Carats to Grams
Convert carats to grams and vice versa
Convert Carats to Grams
ct
g
Conversion Formulas
1 carat = 0.2 grams (200 milligrams)
1 gram = 5 carats
Quick Reference
0.5 ct = 0.1 g
1 ct = 0.2 g
5 ct = 1.0 g
0.1 g = 0.5 ct
1 g = 5.0 ct
10 g = 50.0 ct
Convert between carats (ct) and grams (g) precisely. The carat is the international standard unit for measuring the weight of gemstones, diamonds, and pearls. One carat equals exactly 200 milligrams (0.2 grams), a standard adopted in 1907 to ensure consistency in the jewelry trade worldwide.
Common Use Cases
- Evaluating diamond and gemstone weights
- Jewelry appraisal and insurance
- Comparing gemstone prices per carat
- Pearl weight measurements