LBS to kg●
Pounds in. Kilograms out. Convert body weight, luggage and parcels in a moment.
Weight
Use a decimal point, for example 2.54. Scientific notation works too: 1e3.
Try a value
Pick an example to startThe formula
kilograms = pounds × 0.45359237
One avoirdupois pound is exactly 0.45359237 kilograms. Multiply pounds by 0.45359237 to get kilograms.
A worked example
For 150 lbs, multiply 150 by 0.45359237. The result is approximately 68.038855 kilograms.
150 × 0.45359237 ≈ 68.038855 kg
Quick reference
Reference values are rounded to 6 decimal places. Use the converter above for other values or precision.
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.453592 |
| 2 | 0.907185 |
| 5 | 2.267962 |
| 10 | 4.535924 |
| 20 | 9.071847 |
| 50 | 22.679619 |
| 100 | 45.359237 |
| 150 | 68.038856 |
| 200 | 90.718474 |
All equivalent units
The same value, in every supported unit.
Weight conversions
For body weight, luggage and parcels.
Use this conversion for body weight, airline baggage limits, parcels and recipes written in pounds. A quick check is to halve the pounds and subtract a tenth of that. This page uses the avoirdupois pound (lb). To get stones or ounces, change the unit in the menu.
Calculation details & precision
Weight conversions use kilograms as the base mass unit. One pound is exactly 0.45359237 kg and a stone is 14 lb. Metric tonnes, US short tons and UK long tons are separate units. Troy ounces and standard ounces use different definitions.
Automatic displays up to 12 significant digits. Choose 2, 4 or 6 decimal places in Precision for a shorter result. Displayed results are rounded; very large or small values use scientific notation.
Common questions
How many kilograms are in a pound?
One pound is exactly 0.45359237 kilograms, which is approximately 0.453592 kg.
How do I convert lbs to kg in my head?
Halve the pounds, then subtract about 10 percent of that half. For 100 lbs, half is 50, minus 5 gives about 45 kg. The exact value is 45.359 kg.
Is a pound the same in the UK and the US?
For this conversion, yes. Both use the avoirdupois pound of 0.45359237 kg. The UK also uses stones, where one stone is 14 pounds.