Convert Centigrams to Carats
1 centigram is 0.05 ct. One centigram is exactly 0.05 carats.
One centigram is 0.05 carats. To convert centigrams to carats, multiply by 0.05; to go the other way, divide by 0.05 or multiply by 20. The factor is exact rather than rounded: it follows from NIST Handbook 44. A hundredth of a gram, or ten milligrams.
Factor checked against the defining standard · How we check
- Centigrams × 0.05
1 * 0.050.05 ct
1 centigram in every weight unit
| Unit | Value | Exact factor |
|---|---|---|
| ounces | 0.0003527396195 oz | × 0.000352739619496 |
| pounds | 0.00002204622622 lb | × 0.0000220462262185 |
| stone | 0.000001574730444 st | × 0.00000157473044418 |
| US tons | 0.00000001102311311 ton | × 0.0000000110231131092 |
| micrograms | 10,000 mcg | × 10,000 |
| milligrams | 10 mg | × 10 |
| centigrams (as entered) | 1 cg | — |
| grams | 0.01 g | × 0.01 |
| kilograms | 0.00001 kg | × 0.00001 |
| slugs | 0.0000006852176586 slug | × 0.000000685217658568 |
| tonnes | 0.00000001 t | × 0.00000001 |
| carats | 0.05 ct | × 0.05 |
| troy ounces | 0.0003215074657 ozt | × 0.000321507465686 |
| grains | 0.1543235835 gr | × 0.154323583529 |
| long tons | 0.000000009842065276 LT | × 0.00000000984206527611 |
Factors are entered by hand from NIST Handbook 44 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert centigrams to carats? The converter and the working
- 1.Take the measurement in centigrams.
- 2.Multiply by 0.05 — that is how many carats fit in one centigram.
- 3.To go back the other way, divide by 0.05, or multiply by 20.
Worked example: 25 centigrams to carats
- Formula
- cg × 0.05 = ct
- Arithmetic
- 25 × 0.05 = 1.25 ct
- Answer
- 25 cg = 1.25 ct
The factor is exact, so this figure is exact too — only the display is rounded.
Centigrams to carats conversion table
| Centigrams | Carats |
|---|---|
| 1 cg | 0.05 ct |
| 2 cg | 0.1 ct |
| 3 cg | 0.15 ct |
| 4 cg | 0.2 ct |
| 5 cg | 0.25 ct |
| 6 cg | 0.3 ct |
| 7 cg | 0.35 ct |
| 8 cg | 0.4 ct |
| 9 cg | 0.45 ct |
| 10 cg | 0.5 ct |
| 12 cg | 0.6 ct |
| 15 cg | 0.75 ct |
| 20 cg | 1 ct |
| 25 cg | 1.25 ct |
| 50 cg | 2.5 ct |
| 100 cg | 5 ct |
| 200 cg | 10 ct |
| 300 cg | 15 ct |
| 500 cg | 25 ct |
| 1000 cg | 50 ct |
| 2000 cg | 100 ct |
| 5000 cg | 250 ct |
| 10000 cg | 500 ct |
What is a centigram?
A hundredth of a gram, or ten milligrams. It survives mainly in pharmacology and in school exercises about metric prefixes.
What is a carat?
Exactly 200 milligrams, fixed by international agreement in 1907 after centuries of local carats. It weighs a gemstone; the karat that grades gold is a different word for a different thing — purity in twenty-fourths.
How many carats are in a centigram?
One centigram is 0.05 carats, exactly. Going the other way, one carat is 20 centigrams. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every weight unit here
The whole group — 15 units with their symbols and the size of each one in kilograms — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a centigram.
Cite this page
- APA
- Rule Calculator. (2026). Convert Centigrams to carats. Rule Calculator. https://rulecalculators.com/convert/centigram-to-carat
- MLA
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- Chicago
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Questions people actually ask
- How many carats are in a centigram?
- 0.05. Exactly 200 milligrams, fixed by international agreement in 1907 after centuries of local carats. It weighs a gemstone; the karat that grades gold is a different word for a different thing — purity in twenty-fourths.
- How do I convert carats back to centigrams?
- Divide by 0.05, or multiply by 20 — they are the same operation.
Other weight conversions
Carats to centigrams — the same conversion the other way.