Convert Centigrams to Milligrams
1 centigram is 10 mg. One centigram is exactly 10 milligrams.
One centigram is 10 milligrams. To convert centigrams to milligrams, multiply by 10; to go the other way, divide by 10 or multiply by 0.1. 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 × 10
1 * 1010 mg
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 milligrams? The converter and the working
- 1.Take the measurement in centigrams.
- 2.Multiply by 10 — that is how many milligrams fit in one centigram.
- 3.To go back the other way, divide by 10, or multiply by 0.1.
Worked example: 25 centigrams to milligrams
- Formula
- cg × 10 = mg
- Arithmetic
- 25 × 10 = 250 mg
- Answer
- 25 cg = 250 mg
The factor is exact, so this figure is exact too — only the display is rounded.
Centigrams to milligrams conversion table
| Centigrams | Milligrams |
|---|---|
| 1 cg | 10 mg |
| 2 cg | 20 mg |
| 3 cg | 30 mg |
| 4 cg | 40 mg |
| 5 cg | 50 mg |
| 6 cg | 60 mg |
| 7 cg | 70 mg |
| 8 cg | 80 mg |
| 9 cg | 90 mg |
| 10 cg | 100 mg |
| 12 cg | 120 mg |
| 15 cg | 150 mg |
| 20 cg | 200 mg |
| 25 cg | 250 mg |
| 50 cg | 500 mg |
| 100 cg | 1,000 mg |
| 200 cg | 2,000 mg |
| 300 cg | 3,000 mg |
| 500 cg | 5,000 mg |
| 1000 cg | 10,000 mg |
| 2000 cg | 20,000 mg |
| 5000 cg | 50,000 mg |
| 10000 cg | 100,000 mg |
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 milligram?
One thousandth of a gram, and exactly 1,000 micrograms. The unit almost every medicine is dosed in.
How many milligrams are in a centigram?
One centigram is 10 milligrams, exactly. Going the other way, one milligram is 0.1 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 milligrams. Rule Calculator. https://rulecalculators.com/convert/centigram-to-milligram
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- Chicago
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Questions people actually ask
- How many milligrams are in a centigram?
- 10. One thousandth of a gram, and exactly 1,000 micrograms. The unit almost every medicine is dosed in.
- How do I convert milligrams back to centigrams?
- Divide by 10, or multiply by 0.1 — they are the same operation.
Other weight conversions
Milligrams to centigrams — the same conversion the other way.