Milliliters to Centigrams: Convert mL to cg
One milliliter of water weighs 100 centigrams. The centigram is a hundredth of a gram, a unit that survives mainly in schoolwork and on the metric conversion ladder rather than in everyday measuring. For the amounts people actually weigh out, the liters to grams converter is the more practical starting point.
Two Steps, Not One
Milliliters measure volume and centigrams measure weight, so the conversion always passes through density on the way:
Step 1: grams = milliliters x density (g/mL)
Step 2: centigrams = grams x 100
Worked through for 20 mL of milk, which has a density of 1.03 g/mL: 20 x 1.03 gives 20.6 grams, and 20.6 x 100 gives 2,060 centigrams. Skipping straight to the second step is the mistake most often made in homework, because it quietly assumes the liquid is water.
Where the Centigram Sits
| Unit | In Grams | In Centigrams |
|---|---|---|
| 1 kilogram | 1,000 g | 100,000 cg |
| 1 gram | 1 g | 100 cg |
| 1 decigram | 0.1 g | 10 cg |
| 1 centigram | 0.01 g | 1 cg |
| 1 milligram | 0.001 g | 0.1 cg |
Reading the ladder the other way is just as useful: 1 centigram is 10 milligrams, so a 500 mg tablet weighs 50 cg. Go far enough up the same ladder and liquids are weighed in kilograms instead.
Conversion Chart
| Milliliters | Water | Milk | Vegetable Oil | Honey |
|---|---|---|---|---|
| 0.1 mL | 10 cg | 10.3 cg | 9.2 cg | 14.2 cg |
| 0.25 mL | 25 cg | 25.75 cg | 23 cg | 35.5 cg |
| 0.5 mL | 50 cg | 51.5 cg | 46 cg | 71 cg |
| 1 mL | 100 cg | 103 cg | 92 cg | 142 cg |
| 5 mL | 500 cg | 515 cg | 460 cg | 710 cg |
| 10 mL | 1,000 cg | 1,030 cg | 920 cg | 1,420 cg |
| 25 mL | 2,500 cg | 2,575 cg | 2,300 cg | 3,550 cg |
| 50 mL | 5,000 cg | 5,150 cg | 4,600 cg | 7,100 cg |
| 100 mL | 10,000 cg | 10,300 cg | 9,200 cg | 14,200 cg |
| 250 mL | 25,000 cg | 25,750 cg | 23,000 cg | 35,500 cg |
| 500 mL | 50,000 cg | 51,500 cg | 46,000 cg | 71,000 cg |
| 1,000 mL | 100,000 cg | 103,000 cg | 92,000 cg | 142,000 cg |
Why You Rarely See Centigrams
The metric system defines a prefix for every power of ten, but everyday use has settled on steps of a thousand: kilograms, grams, milligrams, micrograms. The centigram and the decigram fall between those steps, so they appear in textbooks that teach the full ladder and almost nowhere else.
One place the prefix does survive is the centiliter, used on European bottle labels, where 70 cL is a standard spirits bottle. The prefix is the same idea applied to volume rather than weight.
Checking Your Own Answer
Two quick sanity checks catch most errors. First, centigrams should always be a larger number than grams, by a factor of exactly 100. Second, for water-like liquids, the centigram figure should be about a hundred times the milliliter figure. If 50 mL of water comes out as anything other than 5,000 cg, a decimal point has moved.
Common Questions
How many centigrams are in 1 mL?
One milliliter of water is 100 centigrams, because it weighs one gram and each gram holds 100 centigrams. Other liquids differ with their density: a milliliter of cooking oil is 92 centigrams and a milliliter of honey is 142 centigrams. The volume is the same in each case, only the weight changes.
Is a centigram bigger than a milligram?
Yes. One centigram equals 10 milligrams, so the centigram is the larger unit. Ordering the small weights from large to small gives gram, decigram, centigram, milligram, microgram, with each step a factor of ten apart until the microgram, which is a thousand times smaller than the milligram.
How do I convert centigrams back to milliliters?
Reverse both steps. Divide the centigrams by 100 to get grams, then divide by the density to get milliliters. So 3,000 cg of water is 30 grams and therefore 30 mL, while the same 3,000 cg of oil is 30 grams but about 32.6 mL, since oil is lighter and takes up more space per gram.
Is cg the same as cL?
No. A centigram (cg) is a unit of weight, one hundredth of a gram. A centiliter (cL) is a unit of volume, equal to 10 mL. The abbreviations differ by one letter, so they are easy to mix up: one centiliter of water weighs 1,000 centigrams.
How many centigrams are in a teaspoon?
A metric teaspoon holds 5 mL, so a teaspoon of water weighs 500 cg. The same teaspoon of honey weighs about 710 cg, because honey is denser. A US teaspoon is slightly smaller, at about 4.93 mL, which makes a teaspoon of water about 493 cg.
Densities and unit definitions follow our methodology, with water at 1.0 g/mL. Real liquids vary slightly with temperature and brand. Written by Shah Nasar. Last updated October 2026.