Weight converter
Pound to Kilogram Converter
Convert lb to kg or reverse with one click. Type a value below for an instant result.
Pound lb
Kilogram kg
lb → kg · runs in your browser, no server
How to convert pound to kilogram
Pound (lb) and Kilogram (kg) both measure weight. Whether you are studying, traveling, cooking, or working on a project, converting between them should be fast and accurate.
This page converts pound to kilogram — ideal when American or British measurements need to match metric specs, school assignments, or international standards.
The standard relationship used on this page means that 1 pound equals 0.453592 kg. Enter any number in the calculator — use the swap button to reverse the direction without leaving the page.
150 lb is about 68.0388 kg — useful for gym records, luggage weight limits, and medical charts outside the US.
Need kilogram to pound instead? Try our Kilogram to Pound converter. kg → lb
When you'll use this
- Converting a US gym lift (bench press, squat) recorded in pounds into kilograms for an international competition or gym
- Checking a US airline's pound-based carry-on or checked-bag allowance against an international kg-based limit
- Converting an American recipe's meat weight in pounds (e.g., "a 3 lb chicken") into kilograms for metric cooking
- Filling out international shipping or customs paperwork that requires weight in kilograms
- Converting US body weight (typically reported in pounds) for a metric BMI calculator or international medical form
Practical note
Lifters and travelers are the two biggest audiences for this page. A 200 lb deadlift converts to about 90.7 kg, letting a US lifter compare their numbers to international powerlifting meets and kg-denominated gym plates. Travelers use it just as often for luggage: a 50 lb checked bag (a common US domestic airline limit) converts to about 22.7 kg, which is just barely under the 23 kg limit most international carriers enforce — close enough that it is worth converting exactly rather than assuming the two limits are interchangeable.
Tips
- 1 lb equals about 0.4536 kg — roughly half, so halving a pound figure gives a rough (slightly high) kg estimate before checking the exact result.
- Some US domestic airlines allow 50 lb (about 22.7 kg) checked bags while many international carriers cap at 23 kg (about 50.7 lb) — the two limits are close but not identical, so always convert exactly rather than assuming they match.
- Powerlifting and Olympic lifting competitions outside the US record weights in kg; a 315 lb squat converts to about 142.9 kg, useful for reading international leaderboards.
Read our full guide: Airline luggage weight limits: kg vs lb
lb to kg conversion table
| lb | kg |
|---|---|
| 1 | 0.453592 |
| 2 | 0.907184 |
| 5 | 2.26796 |
| 10 | 4.53592 |
| 25 | 11.3398 |
| 50 | 22.6796 |
| 100 | 45.3592 |
| 200 | 90.7184 |
| 500 | 226.796 |
kg to lb conversion table
Or click the swap button in the converter to switch from kg to lb.
| kg | lb |
|---|---|
| 1 | 2.204624 |
| 4 | 8.818497 |
| 8 | 17.636995 |
| 16 | 35.273990 |
| 32 | 70.547981 |
| 64 | 141.095962 |
| 128 | 282.191925 |
| 150 | 330.693663 |
| 200 | 440.924884 |
Frequently asked questions
How many kilograms are in 1 pound? +
One pound equals 0.453592 kg. Use the converter above for any value — results are calculated locally with full precision.
How do I convert lb to kg? +
Use the formula: kg = lb × 0.453592. Enter your value in the calculator and the result appears instantly. Click the swap button to convert kg back to lb.
How many pounds are in 1 kilogram? +
One kilogram equals 2.204624 lb. Swap the converter direction to work backwards from kg to lb.
What is 10 lb in kg? +
10 lb is 4.53592 kg. See the conversion table on this page for more common values.
When would I convert pound to kilogram? +
This conversion is useful for recipes, shipping labels, fitness tracking, and luggage limits. ConvertHub runs entirely in your browser — no data is uploaded to any server.
Is pound to kilogram the same as kilogram to pound? +
They are inverse operations. This page focuses on lb → kg with examples and tables for that direction. For kg → lb, use our separate kilogram to pound converter page.