Pounds to Kilograms Converter
Convert mass and weight measurements between pounds (lbs) and kilograms (kg) instantly with precise standard formulas.
1 lb = 0.453592 kg | 1 kg = 2.20462 lbs
What is the Pounds to Kilograms Converter?
The Pounds to Kilograms Converter is a free online weight conversion tool designed to calculate mass between imperial pounds (lbs) and metric kilograms (kg). It uses internationally recognized mass conversion factors where 1 pound is defined as exactly 0.45359237 kilograms.
Whether you need to convert personal body weight, check airline baggage allowances, or standardise recipe weights, this bidirectional converter delivers instant and reliable results.
How Does the LBS to KG Conversion Work?
The converter uses certified mathematical standards for bidirectional accuracy:
LBS to KG Formula
Multiply pounds by 0.453592: kg = lbs × 0.453592.
KG to LBS Formula
Multiply kilograms by 2.20462: lbs = kg × 2.20462.
Fast & Accurate
Calculates precise weight figures in real-time with a single click.
How to Use this Converter
- Enter Measurement: Type your number in either the Pounds or Kilograms box.
- Swap Focus (Optional): Click the ⇄ button to toggle primary input.
- Click Calculate: Press the “Calculate Conversion” button to display the exact output.
Frequently Asked Questions (FAQ)
How many kilograms are in 1 pound?
There are approximately 0.453592 kilograms in 1 pound.
How do I convert 150 lbs to kg?
To convert 150 lbs to kg, multiply 150 by 0.453592, which equals approximately 68.04 kg.
What is the quick mental formula for lbs to kg?
For a quick approximation, divide the number of pounds by 2 (e.g., 100 lbs ÷ 2 = 50 kg). The exact calculation is slightly lower (45.36 kg).