Convert carats to grams
1 ct = 0.2 g — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.2g
As a fraction: 1/5
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1 ct = 0.2 g
Show this value in all 34 weight & mass units
- Megagrams Mg 0.000 000 2
- Kilograms kg 0.0002
- Hectograms hg 0.002
- Decagrams dag 0.02
- Grams g 0.2
- Decigrams dg 2
- Centigrams cg 20
- Milligrams mg 200
- Micrograms µg 200 000
- Nanograms ng 200 000 000
- Picograms pg 200 000 000 000
- Tonnes t 0.000 000 2
- Kilotonnes kt 2e-10
- Megatonnes Mt 2e-13
- Quintals q 0.000 002
- Carats ct 1
- Pounds lb 0.000 440 924 524 37
- Ounces oz 0.007 054 792 389 92
- Drams dr 0.112 876 678 239
- Grains gr 3.086 471 670 59
- Stones st 0.000 031 494 608 883 6
- Hundredweight (US)s cwt (US) 0.000 004 409 245 243 7
- Hundredweight (UK)s cwt (UK) 0.000 003 936 826 110 44
- Short ton (US)s tn 0.000 000 220 462 262 185
- Long ton (UK)s LT 0.000 000 196 841 305 522
- Troy ounces ozt 0.006 430 149 313 73
- Troy pounds lbt 0.000 535 845 776 144
- Pennyweights dwt 0.128 602 986 275
- Slugs slug 0.000 013 704 353 171 4
- Atomic mass units u 1.20442815073e+23
- Electron masss mₑ 2.19553820852e+26
- Planck masss mₚ 9189.343 669 51
- Earth masss M🜨 3.34884967014e-29
- Solar masss M☉ 1.00557086258e-34
Every row is Carat (ct) converted through the kilogram, in exact rational arithmetic.
How to convert carats to grams
Multiply the number of carats by 0.2 to get grams.
The exact factor is 0.2 — as a fraction, 1/5.
Carat: The metric carat: exactly 200 mg.
Carat to Gram conversion table
| Carats (ct) | Grams (g) |
|---|---|
| 1 ct | 0.2 |
| 2 ct | 0.4 |
| 3 ct | 0.6 |
| 5 ct | 1 |
| 10 ct | 2 |
| 20 ct | 4 |
| 25 ct | 5 |
| 50 ct | 10 |
| 100 ct | 20 |
| 250 ct | 50 |
| 500 ct | 100 |
| 1000 ct | 200 |
Gram to Carat conversion table
| Grams (g) | Carats (ct) |
|---|---|
| 1 g | 5 |
| 2 g | 10 |
| 3 g | 15 |
| 5 g | 25 |
| 10 g | 50 |
| 20 g | 100 |
| 25 g | 125 |
| 50 g | 250 |
| 100 g | 500 |
| 250 g | 1250 |
| 500 g | 2500 |
| 1000 g | 5000 |
Frequently asked
How many grams are in a carat?
One carat equals 0.2 grams (ct → g). That figure is exact, not rounded.
How do you convert carats to grams?
Multiply the number of carats by 0.2 to get grams.
What is 1 g in carats?
One gram is 5 carats.
What is 10 ct in g?
10 ct = 2 g.
What exactly is a carat?
The metric carat: exactly 200 mg.