Convert Pound to Centigram
Convert pounds to centigrams instantly. 1 pound = 45359.237 centigram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Centigram to Pound converter for the reverse conversion.
Units explained
Pound
The pound (lb) is a unit of mass equal to exactly 0.45359237 kilogram.
From Latin 'libra pondo' (a pound by weight); the symbol lb comes from 'libra'.
The primary weight unit in the United States and informally in the UK.
The international avoirdupois pound was fixed in the 1959 yard-and-pound agreement.
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.
Pound to Centigram conversion formula
The relationship between pounds and centigrams:
To convert pounds to centigrams, multiply the value in pounds by 45359.237. To reverse, multiply centigrams by 2.204623e-5.
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 Pound converter for the reverse direction.
Step-by-step: convert pounds to centigrams
- Write down the value in pounds (lb).
- Multiply that value by the factor 45359.237.
- The product is the equivalent value in centigrams (cg).
- To reverse, multiply the centigram value by 2.204623e-5.
Worked examples
Example 1 — Convert 1 lb to cg:
1 × 45359.237 = 45359.237 cg
Example 2 — Convert 100 lb to cg:
100 × 45359.237 = 4535923.7000000002 cg
Real-world example — Macro-to-micro scale comparison
2 pounds of measurement converts to a very large number in centigrams — useful in materials science when comparing bulk-sample dimensions to feature-level surface specs.
2 lb × 45359.237 = 90718.474 cg
Real-world example — Macroscopic to microscopic
One pound equals a million centigrams. Optical engineers calculating coherence length compare macro-scale path lengths with micro-scale wavelength differences using exactly this conversion.
1 lb × 45359.237 = 45359.237 cg
Real-world example — Sub-meter precision
A 0.001-pound (1 mm) tolerance equals 1,000 centigrams — useful for surface-finish specs, where macro-scale dimensions are given in the larger unit but feature roughness in the smaller.
0.001 lb × 45359.237 = 45.359237 cg
Pound to Centigram conversion table
Standard reference values for converting pounds to centigrams:
| Pound [lb] | Centigram [cg] |
|---|---|
| 0.01 | 453.59237 |
| 0.1 | 4535.9237 |
| 1 | 45359.237 |
| 2 | 90718.474 |
| 3 | 136077.711 |
| 4 | 181436.948 |
| 5 | 226796.185 |
| 10 | 453592.37 |
| 20 | 907184.74 |
| 30 | 1360777.1100000001 |
| 40 | 1814369.48 |
| 50 | 2267961.8500000001 |
| 100 | 4535923.7000000002 |
| 500 | 2.267962e+7 |
| 1000 | 4.535924e+7 |
Frequently asked questions
How many centigrams is 1 pound?
How do I convert pounds to centigrams?
How do I convert centigrams back to pounds?
How many centigrams is 100 pounds?
Popular weight unit conversions
Convert Pound to other weight units
Show all Pound conversions
Metric / SI (18 units)
Avoirdupois (14 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 lb = 45359.237 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 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.