Pound to Kilogram
1 lb = 0.45359 kg
Convert Pound (lb) to Kilogram (kg) with engineering-grade precision. Instant results, formula, and reference table below.
1 Pound ≈0.45359237 Kilogram
How to convert Pound to Kilogram (lb to kg)
Converting Pounds to Kilograms is critical for developers working with international data standards or scientific applications. This tool performs the calculation entirely on your client (browser) using JavaScript/WASM, ensuring zero latency and maximum privacy.
The Formula
1 lb = 0.453592 kg
Calculation Example
Let's say you want to convert 5 lb to kg:
- Input: 5 lb
- Calculation: 5 × 0.453592
- Result: 2.2680 kg
About the Pound to Kilogram conversion
The conversion factor from Pound (lb) to Kilogram (kg) is 0.45359, meaning 1 lb = 0.45359 kg and inversely 1 kg = 2.20462 lb. That makes the Kilogram the larger of the two units in the weight category, where the SI base unit is the kilogram. Every ratio here is derived from the SI/international definition rather than a rounded approximation, so results are stable across repeated conversions.
Need the reverse? Use the Kilogram to Pound converter.
Frequently Asked Questions
How do I convert Pound to Kilogram?
To convert Pound to Kilogram, you need to multiply the lb value by 0.453592.
What is the formula for lb to kg?
The simple formula is: kg = lb × 0.453592.
Which is bigger: Pound or Kilogram?
A Kilogram is bigger. One Kilogram is equal to approx 2.2046 Pounds.
How many Pounds are in one Kilogram?
There are approximately 2.20462 Pounds in one Kilogram.
Quick Conversion Table
| lb | kg |
|---|---|
| 1 | 0.4536 |
| 5 | 2.2680 |
| 10 | 4.5359 |
| 20 | 9.0718 |
| 50 | 22.6796 |
| 100 | 45.3592 |