One pound is legally defined as 0.45359237 kilograms, so results are exact. It is the everyday tool for gym logs, luggage limits, shipping weights, and any health or fitness record that mixes the two systems. If you are tracking body metrics, pair it with the BMI Calculator.
Calculator
Formula used
kilograms = pounds × 0.45359237 · pounds = kilograms ÷ 0.45359237
How to use the Lbs to Kg Converter
- Enter a weight in pounds.
- Read the equivalent in kilograms.
- Or enter kilograms to convert back to pounds.
- Use the table for common weights such as 1, 10 or 100 lb.
About this tool
The Lbs to Kg Converter is built for speed and accuracy: every calculation runs in your browser, so your data never leaves your device and the result updates as you type. It works equally well on a phone, a tablet or a desktop, and it is free to use as many times as you like.
Common use cases
- Converting body weight for a metric health record.
- Checking airline baggage limits in kilograms.
- Reading product weights on imported packaging.
- Logging lifts in a gym notebook that uses kilos.
Tips for the best result
- Use the latest figures you have - even a small change in rate or term can shift the outcome by hundreds.
- For annual figures, divide by 12 to get a monthly number you can compare with the result.
- Bookmark this page and revisit the calculation as the inputs change.
Frequently asked questions
How many kg is 1 lb?
0.4536 kg. A good mental shortcut is that 2.2 lb is roughly 1 kg.
Is a pound the same everywhere?
Yes, the international avoirdupois pound has been defined as exactly 0.45359237 kg since 1959.
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