kg to lb
Kilogram to pound
NIST SP 811 factors
Weight & mass conversions
Weight and mass conversions between kilograms, pounds, and ounces. The avoirdupois pound has been defined as exactly 0.45359237 kilograms since 1959, so these conversions are exact by international agreement.
Converters
Pick a pair
Every page includes the exact factor and a reference table
lb to kg
Pound to kilogram
g to oz
Gram to ounce
oz to g
Ounce to gram
Reference
All weight & mass units
Factors trace back to NIST SP 811
| Unit | Symbol | Factor |
|---|---|---|
| Milligram | mg | 1 mg = 0.000001 kg (exact) |
| Gram | g | 1 g = 0.001 kg (exact) |
| Kilogram | kg | SI base unit |
| Metric ton | t | 1 t = 1,000 kg (exact) |
| Ounce | oz | 1 oz = 28.349523125 g (exact) |
| Pound | lb | 1 lb = 0.45359237 kg (exact) |
| Stone | st | 1 st = 14 lb (exact) |
Factors are exact definitions; results are
rounded only for display.
AD
Keep converting