Use our Pounds to Kilograms converter to quickly and accurately convert weight from pounds (lb) to kilograms (kg). Enter a value in the calculator below to instantly find the equivalent weight in kilograms.
Convert Pounds to Kilograms
Enter a weight in pounds (lb) to instantly calculate the equivalent weight in kilograms (kg).
Formula: kg = lb × 0.45359237
How to Convert Pounds to Kilograms
To convert pounds to kilograms, multiply the weight in pounds by 0.45359237. One pound (lb) is exactly equal to 0.45359237 kilograms (kg).
Formula
kg = lb × 0.45359237
Example: Convert 100 pounds to kilograms.
100 × 0.45359237 = 45.359237
100 lb = 45.359237 kg
Pounds to Kilograms Conversion Chart
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.453592 |
| 5 | 2.267962 |
| 10 | 4.535924 |
| 25 | 11.339809 |
| 50 | 22.679619 |
| 75 | 34.019428 |
| 100 | 45.359237 |
| 150 | 68.038856 |
| 200 | 90.718474 |
| 250 | 113.398093 |
| 300 | 136.077711 |
| 500 | 226.796185 |
Quick Pounds to Kilograms Estimate
Need a quick estimate without a calculator? A simple way to approximate kilograms is to divide the number of pounds by 2.2. For example, 220 pounds ÷ 2.2 is approximately 100 kilograms. This shortcut is useful for mental calculations, but use the converter above when you need a more precise result.
For more precise measurements, use the Pounds to Kilograms converter above to calculate the exact kilogram value.
When to Convert Pounds to Kilograms
A Pounds to Kilograms converter is useful when comparing body weight, shipping weights, luggage limits, product specifications, fitness information, medical measurements, and other weight values between measurement systems. Pounds are commonly used in the United States, while kilograms are widely used internationally and are the SI unit of mass.
Frequently Asked Questions
How do you convert pounds to kilograms?
Multiply the number of pounds by 0.45359237 to calculate the equivalent weight in kilograms.
How many kilograms are in 1 pound?
One pound equals exactly 0.45359237 kilograms.
What is 100 lbs in kg?
100 pounds equals 45.359237 kilograms, or approximately 45.36 kg.
What is 200 lbs in kg?
200 pounds equals 90.718474 kilograms, or approximately 90.72 kg.
What is the difference between pounds and kilograms?
The pound is a unit commonly used in the U.S. customary system, while the kilogram is the SI base unit of mass and is widely used internationally.
About Pounds
The pound, abbreviated lb, is a unit of mass commonly used in the United States and in some other contexts around the world. The international avoirdupois pound is defined as exactly 0.45359237 kilograms.
About Kilograms
The kilogram, abbreviated kg, is the base unit of mass in the International System of Units (SI). Kilograms are widely used around the world for body weight, products, shipping, science, commerce, and many other measurements.
For additional information about metric measurement and SI units, visit the U.S. National Institute of Standards and Technology (NIST).
The kilogram, abbreviated kg, is the base unit of mass in the International System of Units (SI). Kilograms are widely used around the world for body weight, products, shipping, science, commerce, and many other measurements.
For fast and accurate results, use our Pounds to Kilograms converter whenever you need to compare weight measurements between pounds (lb) and kilograms (kg).
Common Uses for Pounds and Kilograms
Pounds and kilograms are commonly used to measure body weight, luggage, packages, food, equipment, and many other everyday items. In the United States, weight is often expressed in pounds (lb), while kilograms (kg) are widely used throughout most of the world. Understanding both units is especially useful when traveling internationally, comparing fitness or health information, checking airline baggage limits, reviewing shipping specifications, or purchasing products from another country. A reliable pounds to kilograms conversion makes it easier to compare these measurements accurately.
Convert Kilograms to Pounds
Need to convert the other way? Use our Kilograms to Pounds converter to quickly convert weight from kilograms (kg) to pounds (lb).
Explore more measurement tools in our Weight & Mass Converters collection, or browse All Converters.