Pounds to Kilograms: 1 lb equals 0.453592 kg. To convert pounds to kilograms, multiply by 0.453592 (kg = lb × 0.453592). For example, 10 lb = 4.53592 kg.
How to Convert Pounds to Kilograms
To convert from pounds to kilograms, multiply the value by 0.453592. The conversion is linear, meaning doubling the input doubles the output.
Conversion Formula
- Pounds to Kilograms:
kg = lb × 0.453592 - Kilograms to Pounds:
lb = kg ÷ 0.453592
Pounds to Kilograms Conversion Chart
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 0.1 | 0.045359 |
| 0.25 | 0.113398 |
| 0.5 | 0.226796 |
| 1 | 0.453592 |
| 2 | 0.907184 |
| 3 | 1.360776 |
| 5 | 2.26796 |
| 10 | 4.53592 |
| 20 | 9.07184 |
| 25 | 11.3398 |
| 50 | 22.6796 |
| 100 | 45.3592 |
| 250 | 113.398 |
| 1000 | 453.592 |
Understanding the Units
What is a Pound?
The pound (avoirdupois) equals exactly 0.45359237 kilograms by the 1959 international yard and pound agreement.
From the Latin libra pondo ("pound by weight"), source of the abbreviation lb.
Common contexts: health, shipping, cooking (US).
What is a Kilogram?
The kilogram is the SI base unit of mass, defined since 2019 by fixing the Planck constant at 6.62607015 × 10⁻³⁴ J·s.
From the French kilogramme adopted in 1795; previously defined by the International Prototype Kilogram in Paris until 2019.
Common contexts: science, commerce, health.
Real-World Reference Points
| Item | Pounds (lb) | Kilograms (kg) |
|---|---|---|
| A loaf of bread | 1.5 | 0.6804 |
| A bowling ball (max) | 16 | 7.2575 |
| A standard US bag of flour | 5 | 2.268 |