Convert Centigram to Milligram
Convert centigrams to milligrams instantly. 1 centigram = 10 milligram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Milligram to Centigram converter for the reverse conversion.
Units explained
Centigram
A centigram (cg) equals 0.00001 kilogram, or 0.01 gram.
From the SI prefix 'centi-' (from Latin 'centum', hundred).
Used in pharmacology and analytical chemistry.
Part of the original metric system of 1795.
Milligram
A milligram (mg) equals one-millionth of a kilogram, or 0.001 gram.
From the SI prefix 'milli-' (from Latin 'mille', thousand).
Standard for medicine dosing, nutrition labels, and fine jewelry.
Part of the original metric system of 1795.
Centigram to Milligram conversion formula
The relationship between centigrams and milligrams:
To convert centigrams to milligrams, multiply the value in centigrams by 10. To reverse, multiply milligrams by 0.1.
How to use this converter
Type a value into the calculator. The result in milligrams updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Milligram to Centigram converter for the reverse direction.
Step-by-step: convert centigrams to milligrams
- Write down the value in centigrams (cg).
- Multiply that value by the factor 10.
- The product is the equivalent value in milligrams (mg).
- To reverse, multiply the milligram value by 0.1.
Worked examples
Example 1 — Convert 1 cg to mg:
1 × 10 = 10 mg
Example 2 — Convert 100 cg to mg:
100 × 10 = 1000 mg
Real-world example — Hair-width scale measurements
A 70-centigram measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like milligrams for direct comparison across supplier datasheets.
70 cg × 10 = 700 mg
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 centigrams), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 cg × 10 = 30 mg
Real-world example — Plastic-film thickness alternates
A 150-centigram plastic film converts cleanly to milligrams — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 cg × 10 = 1500 mg
Centigram to Milligram conversion table
Standard reference values for converting centigrams to milligrams:
| Centigram [cg] | Milligram [mg] |
|---|---|
| 0.01 | 0.1 |
| 0.1 | 1 |
| 1 | 10 |
| 2 | 20 |
| 3 | 30 |
| 4 | 40 |
| 5 | 50 |
| 10 | 100 |
| 20 | 200 |
| 30 | 300 |
| 40 | 400 |
| 50 | 500 |
| 100 | 1000 |
| 500 | 5000 |
| 1000 | 10000 |
Frequently asked questions
How many milligrams is 1 centigram?
How do I convert centigrams to milligrams?
How do I convert milligrams back to centigrams?
How many milligrams is 100 centigrams?
Popular weight unit conversions
Convert Centigram to other weight units
Show all Centigram conversions
Metric / SI (17 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 cg = 10 mg) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.