Gram to carat converter: 1 gram is 5 carats

By HeyGema™ · Updated

In short

1 gram = 5 carats. 1 carat = 0.2 grams. The carat is exactly 200 milligrams (0.2 grams).

Carat converter

1 grams = 5 carats

1 carat is exactly 200 milligrams (0.2 grams). A point is one hundredth of a carat.

Grams to carats

Multiply grams by 5 to get carats. A jewelry scale that reads to 0.001 g gives a stone's weight to 0.005 carat. Weigh the stone alone, in a small dish with the scale tared to zero.

0.01 grams
Carats: 0.05 carats
0.05 grams
Carats: 0.25 carats
0.1 grams
Carats: 0.5 carats
0.2 grams
Carats: 1 carat
0.5 grams
Carats: 2.5 carats
1 gram
Carats: 5 carats
2 grams
Carats: 10 carats
5 grams
Carats: 25 carats
10 grams
Carats: 50 carats
20 grams
Carats: 100 carats
50 grams
Carats: 250 carats
100 grams
Carats: 500 carats

Weight and size of common diamonds

For a sense of scale, this is what common round diamond weights come to in grams and milligrams, and how wide each stone is.

0.25 ct
In grams: 0.050 g
In milligrams: 50 mg
Round diamond size: 4.1 mm
0.5 ct
In grams: 0.10 g
In milligrams: 100 mg
Round diamond size: 5.1 mm
1 ct
In grams: 0.20 g
In milligrams: 200 mg
Round diamond size: 6.5 mm
2 ct
In grams: 0.40 g
In milligrams: 400 mg
Round diamond size: 8.1 mm
3 ct
In grams: 0.60 g
In milligrams: 600 mg
Round diamond size: 9.3 mm
5 ct
In grams: 1.00 g
In milligrams: 1000 mg
Round diamond size: 11.0 mm
10 ct
In grams: 2.00 g
In milligrams: 2000 mg
Round diamond size: 13.9 mm

Carats to grams

1 carat = 0.2 grams. For all weight units at once use the carat converter. For size instead of weight, see the carat to mm calculator.

Questions

1 gram is 5 carats.
0.5 grams is 2.5 carats.
Use a jewelry scale that shows carats or grams to three decimals. If it shows grams, multiply by 5 for carats.

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