Pounds to Kilograms Converter
Enter a weight in pounds and instantly get the exact equivalent in kilograms.
Multiply pounds by 0.45359237, the exact factor set by the 1959 international yard and pound agreement: 150 lb is 68.04 kg and 200 lb is 90.72 kg.
Use the Pounds to Kilograms Converter
Weight in Pounds (lbs)
Quick values
Result in Kilograms (kg)
Enter a value on the left to see the result.
Common lbs to kg Reference
| Pounds (lbs) | Kilograms (kg) | Common context |
|---|
Quick answer
Multiply pounds by 0.45359237, the exact factor set by the 1959 international yard and pound agreement: 150 lb is 68.04 kg and 200 lb is 90.72 kg. For a quick mental estimate, halve the pounds and take off 10%, so 150 lb is about 67.5 kg. Type a weight and the page shows kilograms rounded to 2 and to 6 decimals.
Examples
| Pounds | Kilograms |
|---|---|
| 1 | 0.45 |
| 10 | 4.54 |
| 50 | 22.68 |
| 100 | 45.36 |
| 150 | 68.04 |
| 200 | 90.72 |
| 250 | 113.40 |
Type a weight in pounds.
Summary
This tool converts any weight from pounds (lb) to kilograms (kg) using the exact conversion factor of 1 lb = 0.45359237 kg, as defined by the international avoirdupois standard. Results are shown to 6 decimal places for engineering accuracy, as well as a rounded everyday value. The conversion is performed entirely in your browser with no data sent to any server.
How it works
- Type a weight value in pounds into the input field.
- The converter multiplies your value by 0.45359237, the exact factor set by the 1959 international yard and pound agreement.
- The result in kilograms appears instantly, shown to 6 decimal places and rounded to 2.
- Use the Swap button to reverse the conversion and convert kilograms back to pounds.
- Click Copy to copy the result to your clipboard.
Use cases
- Convert body weight from lbs to kg for international medical forms.
- Check luggage weight limits stated in kilograms against a pound scale.
- Convert recipe ingredient quantities from imperial to metric.
- Calculate shipping weights for carriers that require kilograms.
- Convert gym equipment weights from lb plates to kg equivalents.
- Verify product weight specs when shopping across different regions.
- Convert birth weight records from pounds to kilograms.