⚖️ Carats to Centigrams Converter

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1 carat =
20 centigrams
1 centigram =
0.05 carats
Formula
cg = ct × 20
Handy values
5 ct = 100 cg · 10 ct = 200 cg · 100 ct = 2,000 cg

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⚡ Carats to Centigrams: the quick answer

1 ct = 20 cg 1 carat equals 20 centigrams

To convert carats to centigrams, multiply the value by 20. To go the other way, multiply centigrams by 0.05 to get carats.

↔ Convert centigrams to carats instead

🧮 Formula

Carats to Centigrams
cg = ct × 20
Centigrams to Carats
ct = cg × 0.05

Where

  • ct = the weight in carats
  • cg = the weight in centigrams
Every unit here is defined by its weight in kilograms, so the conversion factor is (kilograms per carat) ÷ (kilograms per centigram).

📊 Carats to Centigrams conversion table

Carats (ct)Centigrams (cg)
1 ct20 cg
2 ct40 cg
3 ct60 cg
4 ct80 cg
5 ct100 cg
6 ct120 cg
7 ct140 cg
8 ct160 cg
9 ct180 cg
10 ct200 cg
12 ct240 cg
14 ct280 cg
15 ct300 cg
20 ct400 cg
21 ct420 cg
24 ct480 cg
25 ct500 cg
30 ct600 cg
40 ct800 cg
50 ct1,000 cg
60 ct1,200 cg
75 ct1,500 cg
80 ct1,600 cg
100 ct2,000 cg
200 ct4,000 cg
250 ct5,000 cg
300 ct6,000 cg
400 ct8,000 cg
500 ct10,000 cg
750 ct15,000 cg
1,000 ct20,000 cg

📘 About these units

Carat (ct). The metric carat is 200 milligrams, the unit for diamonds and gemstones.

Centigram (cg). A centigram is one hundredth of a gram.

❓ Frequently asked questions

How many centigrams are in one carat?

There are 20 centigrams in one carat.

How do I convert carats to centigrams?

Multiply the number of carats by 20. For example, 10 carats equal 200 centigrams.

How many carats are in one centigram?

One centigram equals 0.05 carats.

How many centigrams is 12 carats?

240 centigrams. Other common values: 5 carats = 100 centigrams and 100 carats = 2,000 centigrams.

What people are saying
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Anonymous · 22 Oct 2026