Convert Centigrams to Micrograms
1 centigram is 10,000 mcg. One centigram is exactly 10000 micrograms.
One centigram is 10000 micrograms. To convert centigrams to micrograms, multiply by 10000; to go the other way, divide by 10000 or multiply by 1.0000 × 10^-4. 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 × 10000
1 * 1000010,000 mcg
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 micrograms? The converter and the working
- 1.Take the measurement in centigrams.
- 2.Multiply by 10000 — that is how many micrograms fit in one centigram.
- 3.To go back the other way, divide by 10000, or multiply by 1.0000 × 10^-4.
Worked example: 25 centigrams to micrograms
- Formula
- cg × 10000 = mcg
- Arithmetic
- 25 × 10000 = 250,000 mcg
- Answer
- 25 cg = 250,000 mcg
The factor is exact, so this figure is exact too — only the display is rounded.
Centigrams to micrograms conversion table
| Centigrams | Micrograms |
|---|---|
| 1 cg | 10,000 mcg |
| 2 cg | 20,000 mcg |
| 3 cg | 30,000 mcg |
| 4 cg | 40,000 mcg |
| 5 cg | 50,000 mcg |
| 6 cg | 60,000 mcg |
| 7 cg | 70,000 mcg |
| 8 cg | 80,000 mcg |
| 9 cg | 90,000 mcg |
| 10 cg | 100,000 mcg |
| 12 cg | 120,000 mcg |
| 15 cg | 150,000 mcg |
| 20 cg | 200,000 mcg |
| 25 cg | 250,000 mcg |
| 50 cg | 500,000 mcg |
| 100 cg | 1,000,000 mcg |
| 200 cg | 2,000,000 mcg |
| 300 cg | 3,000,000 mcg |
| 500 cg | 5,000,000 mcg |
| 1000 cg | 10,000,000 mcg |
| 2000 cg | 20,000,000 mcg |
| 5000 cg | 50,000,000 mcg |
| 10000 cg | 100,000,000 mcg |
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 microgram?
One millionth of a gram. Written mcg rather than µg on labels deliberately: the Greek letter is the character most often lost in transcription, and a factor of a thousand in a dose is not a rounding error.
How many micrograms are in a centigram?
One centigram is 10000 micrograms, exactly. Going the other way, one microgram is 1.0000 × 10^-4 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 micrograms. Rule Calculator. https://rulecalculators.com/convert/centigram-to-microgram
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- Chicago
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Questions people actually ask
- How many micrograms are in a centigram?
- 10000. One millionth of a gram. Written mcg rather than µg on labels deliberately: the Greek letter is the character most often lost in transcription, and a factor of a thousand in a dose is not a rounding error.
- How do I convert micrograms back to centigrams?
- Divide by 10000, or multiply by 1.0000 × 10^-4 — they are the same operation.
Other weight conversions
Micrograms to centigrams — the same conversion the other way.