conversions
Pounds to Kilograms
Last updated: June 19, 2026
A mass conversion utility translating standard avoirdupois pounds (lb) into metric kilograms (kg). There are approximately 0.45359237 kilograms in one standard pound.
Convert pounds to kilograms instantly. Read the conversion answers, the mathematical formula, and browse the reference lookup table.
Quick Answer
1 lb equals about 0.4536 kg. Divide pounds by 2.20462 to convert — for example, 150 lbs is about 68 kg.
Lbs to Kg (Pounds to Kilograms)
Bidirectional Pounds and Kilograms Converter
Compute exact conversions using standard standard parameters.
Bidirectional live updates. Enter a number in either field to convert instantly.
Answer
1 kg
2.20462 lb = 1 kg
Pounds to Kilograms Reference Table
| Pounds (lb) | Kilograms (kg) | Description |
|---|---|---|
| 1 lb | 0.45 kg | One pound benchmark |
| 10 lb | 4.54 kg | Ten pounds benchmark |
| 50 lb | 22.68 kg | Cement bag weight |
| 100 lb | 45.36 kg | One hundred pounds benchmark |
| 150 lb | 68.04 kg | Standard adult weight |
| 200 lb | 90.72 kg | Two hundred pounds benchmark |
| 220.46 lb | 100.00 kg | One hundred kilograms equivalent |
Common Lbs to Kg Conversions
Select a specific pound value below to read its direct conversion details and lookup tables:
Examples
1 lb
1 kg
How it works
To convert pounds (lb) to kilograms (kg), perform the following calculation:
Formula
kg = lb ÷ 2.20462
Method
Divide pounds by 2.20462 to get kilograms.
Understanding Pounds and Kilograms Conversions
Converting measurements between metric and imperial scales, or relative temperature benchmarks, is essential in sciences, logistics, cooking, and daily travel. Using standard multipliers guarantees precision and alignment across different measurement systems.
Related Conversion & Metric Calculators
Explore other related converters on our site:
Sources: Kilogram and pound definitions conform to the National Institute of Standards and Technology (NIST) guidelines. Mathematically, the pound is defined as exactly 0.45359237 kilograms, as established by the 1959 International Yard and Pound Agreement. Last reviewed: June 2026.
Related Calculators
More tools from Conversions
Frequently asked questions
You convert pounds to kilograms by dividing the pounds value by 2.20462 (or multiplying by approximately 0.45359237).
150 pounds is equal to exactly 68.04 kilograms (150 ÷ 2.20462).
To quickly estimate pounds to kilograms in your head, divide the pounds by 2 and then subtract 10% from the result (e.g., 100 lbs ÷ 2 = 50; 50 − 5 = 45 kg).
1 pound is defined as exactly 0.45359237 kilograms under international standard agreements.
To convert lbs to kg in your head, divide the pounds value by 2 and then subtract 10% of that result. For example, for 200 lbs: divide by 2 to get 100, then subtract 10 (10% of 100) to get 90 kg.
Yes, the conversion is exact under the 1959 International Yard and Pound Agreement, which defined the standard avoirdupois pound as exactly 0.45359237 kilograms.
100 lbs is equal to approximately 45.36 kilograms.
200 lbs is equal to approximately 90.72 kilograms.
Related calculators
Conversions
Kg to Lbs Converter – Kilograms to Pounds
Convert kilograms to pounds. Find the direct mass answer, the conversion formula, standard reference tables, and a live converter.
Conversions
Kilograms to Gallons
Convert weight in kilograms to liquid volume in gallons. Read the direct conversion answer, the mathematical formula, reference tables, and a live converter.
Conversions
Gallons to Pounds
Convert liquid volume in gallons to weight in pounds. Read the direct conversion answer, the mathematical formula, reference tables, and a live converter.