How do I convert grams to carats?

Multiply the gram value by 5. So x g × 5 = the equivalent in ct.

How do I convert back from carats to grams?

Multiply the carat value by 0.2. For example, 1 ct = 0.2 g.

Is the gram bigger than the carat?

Yes. 1 gram is larger than 1 carat — specifically 5 times larger.

Are these conversion factors exact?

The factor is derived directly from the SI definitions of gram and carat; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.

Grams to Carats Converter

1 g = 5 ct (gram → carat)

1 g = 5 ct

1 gram equals 5 carats. To convert grams to carats, multiply the gram value by 5. For quick reference: 1 g = 5 ct, 5 g = 25 ct, 10 g = 50 ct, 100 g = 500 ct.

From

FormulaCarats = Grams × 5

Quick

How to convert grams to carats

Take your value
Start with your value in grams.
Multiply by 5
Multiply the gram value by 5. This is the exact conversion factor from grams to carats.
Read the result
The product is your value in carats. For example, 5 g × 5 = 25 ct.

Conversion formula

The exact factor from grams to carats is 5.

Carats = Grams × 5

Grams to Carats conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from grams to carats
Grams (g)	Carats (ct)
0.1 g	0.5 ct
0.25 g	1.25 ct
0.5 g	2.5 ct
1 g	5 ct
1.5 g	7.5 ct
2 g	10 ct
2.5 g	12.5 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
12 g	60 ct
15 g	75 ct
18 g	90 ct
20 g	100 ct
25 g	125 ct
30 g	150 ct
35 g	175 ct
40 g	200 ct
45 g	225 ct
50 g	250 ct
60 g	300 ct
70 g	350 ct
75 g	375 ct
80 g	400 ct
90 g	450 ct
100 g	500 ct
120 g	600 ct
125 g	625 ct
150 g	750 ct
175 g	875 ct
180 g	900 ct
200 g	1000 ct
225 g	1125 ct
250 g	1250 ct
275 g	1375 ct
300 g	1500 ct
350 g	1750 ct
400 g	2000 ct
450 g	2250 ct
500 g	2500 ct
600 g	3000 ct
750 g	3750 ct
1000 g	5000 ct
2000 g	10000 ct
5000 g	25000 ct

Real-world reference

A standard paperclip is about 1 g. A US nickel weighs 5 g. A small pencil weighs around 7 g. In carats, that gives you: 1 g = 5 ct, 10 g = 50 ct, 100 g = 500 ct.

Frequently asked questions

How many carats are in 1 gram?: 1 gram equals 5 carats.
How do I convert grams to carats?: Multiply the gram value by 5. So x g × 5 = the equivalent in ct.
What is 5 grams in carats?: 5 grams equals 25 carats.
What is 10 grams in carats?: 10 grams equals 50 carats.
What is 100 grams in carats?: 100 grams equals 500 carats.
How do I convert back from carats to grams?: Multiply the carat value by 0.2. For example, 1 ct = 0.2 g.
Is the gram bigger than the carat?: Yes. 1 gram is larger than 1 carat — specifically 5 times larger.
Are these conversion factors exact?: The factor is derived directly from the SI definitions of gram and carat; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.

About the gram and the carat

The gram

The gram (g) is a metric unit of mass equal to one-thousandth of a kilogram. It is the everyday unit for food labeling, postage, jewelry, and laboratory measurements. The 2019 SI redefinition fixed the kilogram (and therefore the gram) in terms of Planck's constant, ending more than a century of dependence on a physical prototype.

The carat

The metric carat equals exactly 0.2 grams (200 mg). It is the standard unit for weighing gemstones and pearls worldwide, standardized internationally in 1907 to replace regionally varying carat definitions.

Metric tons to Kilograms

t → kg

Metric tons to Ounces

t → oz

Metric tons to Pounds

t → lb