Milligram is 0.001 gram units.
Milligrams to Centigrams Converter — mg to cg
Convert Milligram (mg) to Centigram (cg) using the exact conversion factor (1 milligram = 0.1 centigram). See the formula, worked examples, and conversion table.
Milligrams to Centigrams converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
Centigram is 0.01 gram units.
Result = input x 1e-6 / 1e-5.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams to Centigrams
Weight conversions between Milligram and Centigram come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Specifically: Milligram is 0.001 gram units, and centigram is 0.01 gram units.
Formula
centigrams = milligrams × 0.1
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram equals 0.000001 base units, and 1 centigram equals 0.00001 base units, so dividing one by the other gives the direct milligram-to-centigram factor of 0.1.
Simple example
1 mg × 0.1 = 0.1 cg
1 milligram = 0.1 centigrams.
Real-world example
50 mg × 0.1 = 5 cg
50 milligrams = 5 centigrams.
Conversion table
| Milligram (mg) | Centigram (cg) |
|---|---|
| 1 mg | 0.1 cg |
| 5 mg | 0.5 cg |
| 10 mg | 1 cg |
| 25 mg | 2.5 cg |
| 50 mg | 5 cg |
| 100 mg | 10 cg |
Reverse conversion: Centigram to Milligram
0.1 cg × 10 = 1 mg
0.1 centigrams = 1 milligrams.
milligrams = centigrams × 10
For a page dedicated to this direction, see Centigram to Milligram.
Understanding the Milligram (mg)
Milligram is 0.001 gram units.
Understanding the Centigram (cg)
Centigram is 0.01 gram units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many centigrams are in 1 milligram?
1 milligram equals 0.1 centigrams, using the exact defined conversion factor rather than an estimate.
How do I convert milligram to centigram?
Multiply the milligram value by 0.1. The converter above does this instantly to whatever precision you set.
How do I convert centigram back to milligram?
Use the reverse factor: 1 centigram equals 10 milligrams. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram?
Milligram (mg) is a unit of mass/weight.
What is a centigram?
Centigram (cg) is a unit of mass/weight.
Is the milligram to centigram conversion exact?
Yes. Both milligram and centigram are defined by fixed standards rather than physical artifacts, so the factor of 0.1 used above is exact to as many digits as you choose to display.