Pound to Kilogram Converter
Conversion Formula
Factor
Formula
About Pound
The pound or pound-mass is a unit of mass used in the imperial, United States customary, and other systems of measurement. The most commonly used pound today is the international avoirdupois pound.
Facts About Pounds
- 1 pound = 16 ounces
- 1 pound ≈ 0.453592 kilograms
- 1 pound = 7000 grains
- The international avoirdupois pound is defined as exactly 0.45359237 kilograms
Common Uses
- Body weight measurement in the United States and United Kingdom
- Grocery and food packaging in the US
- Shipping and postage weights
- Gym and fitness equipment weights
- Cooking and recipe measurements
History
The pound has a long history dating back to ancient Rome. The word "pound" comes from the Latin word "pondus," meaning weight. The avoirdupois pound was standardized in 1959 by international agreement between the United States and countries of the Commonwealth of Nations. The pound has been used in England since the 14th century and became the standard unit of weight in the British imperial system.
About Kilogram
The kilogram is the base unit of mass in the International System of Units (SI). It is defined by taking the fixed numerical value of the Planck constant to be 6.62607015×10⁻³⁴ when expressed in the unit J⋅s.
Facts About Kilograms
- 1 kilogram = 1,000 grams
- 1 kilogram ≈ 2.20462 pounds
- 1 kilogram ≈ 35.274 ounces
- The kilogram is the only SI base unit with an SI prefix (kilo-)
Common Uses
- Body weight measurement
- Grocery and food packaging
- Shipping and postage weights
- Scientific mass measurements
- Industrial and manufacturing specifications
History
The kilogram was originally defined in 1795 as the mass of one liter of water. The current definition, based on the Planck constant, was adopted in 2019 to provide a more stable and universal standard independent of physical artifacts.
Conversion Table
Pound(lb) | Kilogram(kg) |
|---|---|
1 | 0.453592 |
2 | 0.907185 |
3 | 1.36078 |
4 | 1.81437 |
5 | 2.26796 |
6 | 2.72155 |
7 | 3.17515 |
8 | 3.62874 |
9 | 4.08233 |
10 | 4.53592 |
Conversion Examples
Convert 1 Pound to Kilogram
- Conversion Factor: 1 lb = 0.453592 kg
- Conversion Formula: kg = lb ÷ 2.20462
- Calculation: 1 lb ÷ 2.20462 = 0.453592 kg
Convert 10 Pound to Kilogram
- Conversion Factor: 1 lb = 0.453592 kg
- Conversion Formula: kg = lb ÷ 2.20462
- Calculation: 10 lb ÷ 2.20462 = 4.53592 kg
Convert 100 Pound to Kilogram
- Conversion Factor: 1 lb = 0.453592 kg
- Conversion Formula: kg = lb ÷ 2.20462
- Calculation: 100 lb ÷ 2.20462 = 45.3592 kg
Convert 1,000 Pound to Kilogram
- Conversion Factor: 1 lb = 0.453592 kg
- Conversion Formula: kg = lb ÷ 2.20462
- Calculation: 1,000 lb ÷ 2.20462 = 453.592 kg