Convert Grams to Centigrams
1 gram is 100 cg. One gram is exactly 100 centigrams.
One gram is 100 centigrams. To convert grams to centigrams, multiply by 100; to go the other way, divide by 100 or multiply by 0.01. The factor is exact rather than rounded: it follows from NIST Handbook 44. One thousandth of a kilogram, and the unit nutrition labels use worldwide.
Factor checked against the defining standard · How we check
- Grams × 100
1 * 100100 cg
1 gram in every weight unit
| Unit | Value | Exact factor |
|---|---|---|
| ounces | 0.03527396195 oz | × 0.0352739619496 |
| pounds | 0.002204622622 lb | × 0.00220462262185 |
| stone | 0.0001574730444 st | × 0.000157473044418 |
| US tons | 0.000001102311311 ton | × 0.00000110231131092 |
| micrograms | 1,000,000 mcg | × 1,000,000 |
| milligrams | 1,000 mg | × 1,000 |
| centigrams | 100 cg | × 100 |
| grams (as entered) | 1 g | — |
| kilograms | 0.001 kg | × 0.001 |
| slugs | 0.00006852176586 slug | × 0.0000685217658568 |
| tonnes | 0.000001 t | × 0.000001 |
| carats | 5 ct | × 5 |
| troy ounces | 0.03215074657 ozt | × 0.0321507465686 |
| grains | 15.43235835 gr | × 15.4323583529 |
| long tons | 0.0000009842065276 LT | × 0.000000984206527611 |
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 grams to centigrams? The converter and the working
- 1.Take the measurement in grams.
- 2.Multiply by 100 — that is how many centigrams fit in one gram.
- 3.To go back the other way, divide by 100, or multiply by 0.01.
Worked example: 25 grams to centigrams
- Formula
- g × 100 = cg
- Arithmetic
- 25 × 100 = 2,500 cg
- Answer
- 25 g = 2,500 cg
The factor is exact, so this figure is exact too — only the display is rounded.
Grams to centigrams conversion table
| Grams | Centigrams |
|---|---|
| 1 g | 100 cg |
| 2 g | 200 cg |
| 3 g | 300 cg |
| 4 g | 400 cg |
| 5 g | 500 cg |
| 6 g | 600 cg |
| 7 g | 700 cg |
| 8 g | 800 cg |
| 9 g | 900 cg |
| 10 g | 1,000 cg |
| 12 g | 1,200 cg |
| 15 g | 1,500 cg |
| 20 g | 2,000 cg |
| 25 g | 2,500 cg |
| 50 g | 5,000 cg |
| 100 g | 10,000 cg |
| 200 g | 20,000 cg |
| 300 g | 30,000 cg |
| 500 g | 50,000 cg |
| 1000 g | 100,000 cg |
| 2000 g | 200,000 cg |
| 5000 g | 500,000 cg |
| 10000 g | 1,000,000 cg |
What is a gram?
One thousandth of a kilogram, and the unit nutrition labels use worldwide.
What is a centigram?
A hundredth of a gram, or ten milligrams. It survives mainly in pharmacology and in school exercises about metric prefixes.
How many centigrams are in a gram?
One gram is 100 centigrams, exactly. Going the other way, one centigram is 0.01 grams. 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 gram.
Cite this page
- APA
- Rule Calculator. (2026). Convert Grams to centigrams. Rule Calculator. https://rulecalculators.com/convert/gram-to-centigram
- MLA
- "Convert Grams to centigrams." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/gram-to-centigram.
- Chicago
- Rule Calculator. "Convert Grams to centigrams." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/gram-to-centigram.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many centigrams are in a gram?
- 100. A hundredth of a gram, or ten milligrams. It survives mainly in pharmacology and in school exercises about metric prefixes.
- How do I convert centigrams back to grams?
- Divide by 100, or multiply by 0.01 — they are the same operation.
Other weight conversions
Centigrams to grams — the same conversion the other way.