Convert Pounds (lb) to Kilograms (kg)
Convert pounds (lb) to kilograms (kg): 1 lb equals about 0.453592 kg. This converter turns the imperial pound — used for body weight and groceries in the US and UK — into the metric kilogram used almost everywhere else.
Formula
1 lb = 0.453592 kg
To convert lb to kg, divide the value by 2.204623.
Conversion Table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 0.01 lb | 0.0045 kg |
| 0.1 lb | 0.0454 kg |
| 0.5 lb | 0.2268 kg |
| 1 lb | 0.4536 kg |
| 2 lb | 0.9072 kg |
| 3 lb | 1.3608 kg |
| 5 lb | 2.268 kg |
| 10 lb | 4.5359 kg |
| 15 lb | 6.8039 kg |
| 20 lb | 9.0718 kg |
| 25 lb | 11.3398 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
| 250 lb | 113.3981 kg |
| 500 lb | 226.7962 kg |
| 1000 lb | 453.5924 kg |
| 2500 lb | 1133.9809 kg |
| 5000 lb | 2267.9619 kg |
| 10000 lb | 4535.9237 kg |
| 50000 lb | 22679.6185 kg |
Common lb to kg Examples
- 1 lb = 0.4536 kg
- 5 lb = 2.268 kg
- 10 lb = 4.5359 kg
- 25 lb = 11.3398 kg
- 50 lb = 22.6796 kg
- 100 lb = 45.3592 kg
- 500 lb = 226.7962 kg
- 1000 lb = 453.5924 kg
About lb to kg
1 kilogram = 2.20462 pounds, so to go from pounds to kilograms you divide by 2.20462 (or multiply by 0.453592). A handy shortcut: halve the pounds and trim a little — 100 lb is about 45 kg.
This is one of the most common everyday conversions: body weight (a 150 lb person is about 68 kg), luggage limits, recipe ingredients and shipping weights. The pound here is the avoirdupois pound; the troy pound used for precious metals is different.
Frequently Asked Questions
What is a quick way to estimate lb to kg?
Round 0.453592 to one or two significant digits and multiply mentally. Use the exact factor when accuracy matters.
Why is the conversion factor between lb and kg 0.453592?
It comes from the official definitions of both Weight & Mass units, which are anchored to internationally agreed reference standards.
What are common uses for converting lb to kg?
Typical scenarios include travel, trade, engineering, science, and any situation where data is reported in lb but needed in kg.
Which industries rely on lb to kg conversions?
Logistics, manufacturing, scientific research, and international commerce all routinely move between lb and kg.
How is lb used in everyday life?
Pounds appears in measurements, product labels, and reports wherever the local convention favors that unit for Weight & Mass.
How is kg used in everyday life?
Kilograms is commonly seen in regions and contexts where it is the preferred Weight & Mass unit, from signage to technical specifications.