Convert Gram to Centigram
Convert grams to centigrams instantly. 1 gram = 100 centigram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Centigram to Gram converter for the reverse conversion.
Units explained
Gram
The gram (g) equals one-thousandth of a kilogram.
From Late Latin 'gramma', a small weight or scruple.
The everyday metric unit for food, medicine, and small objects.
Defined in 1795 as the mass of one cubic centimeter of water at melting point.
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.
Gram to Centigram conversion formula
The relationship between grams and centigrams:
To convert grams to centigrams, multiply the value in grams by 100. To reverse, multiply centigrams by 0.01.
How to use this converter
Type a value into the calculator. The result in centigrams updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Centigram to Gram converter for the reverse direction.
Step-by-step: convert grams to centigrams
- Write down the value in grams (g).
- Multiply that value by the factor 100.
- The product is the equivalent value in centigrams (cg).
- To reverse, multiply the centigram value by 0.01.
Worked examples
Example 1 — Convert 1 g to cg:
1 × 100 = 100 cg
Example 2 — Convert 100 g to cg:
100 × 100 = 10000 cg
Real-world example — Adjacent small-scale precision
One gram equals 1,000 centigrams — the standard sub-millimeter precision conversion that materials engineers use whenever they switch between bulk material thickness specs (larger unit) and surface-finish characteristics (smaller unit).
1 g × 100 = 100 cg
Real-world example — Adjacent metric sub-units
One gram equals 1,000 centigrams. Engineers move between these scales constantly: PCB feature sizes in the larger unit, wire-bond diameters in the smaller.
1 g × 100 = 100 cg
Gram to Centigram conversion table
Standard reference values for converting grams to centigrams:
| Gram [g] | Centigram [cg] |
|---|---|
| 0.01 | 1 |
| 0.1 | 10 |
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
| 4 | 400 |
| 5 | 500 |
| 10 | 1000 |
| 20 | 2000 |
| 30 | 3000 |
| 40 | 4000 |
| 50 | 5000 |
| 100 | 10000 |
| 500 | 50000 |
| 1000 | 100000 |
Frequently asked questions
How many centigrams is 1 gram?
How do I convert grams to centigrams?
How do I convert centigrams back to grams?
How many centigrams is 100 grams?
Popular weight unit conversions
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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 g = 100 cg) 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.