Pounds to Kilograms
Type a value in pounds and see it in kilograms — exact conversion, updated as you type.
Formula: kilograms = pounds × 0.45359237 · Reverse: kilograms to pounds →
| Pounds | Kilograms |
|---|---|
| 1 lb | 0.45359237 kg |
| 2 lb | 0.90718474 kg |
| 5 lb | 2.26796185 kg |
| 10 lb | 4.5359237 kg |
| 25 lb | 11.33980925 kg |
| 50 lb | 22.6796185 kg |
| 100 lb | 45.359237 kg |
Popular values: 1 lb · 10 lb · 50 lb · 100 lb · 150 lb · 200 lb
About this tool
One pound is exactly 0.45359237 kilograms by international definition, which makes pounds-to-kilograms a single multiplication. Airlines, hospitals and most of the world work in kilograms, so this conversion comes up for luggage limits, body weight and shipping.
A quick mental shortcut: halve the pounds, then subtract about 10% of that half — 150 lb → 75 − 7.5 ≈ 67.5 kg (the exact answer is 68.04 kg). Close enough for a suitcase check; use the tool when it matters.
How to use it
- Enter the value in pounds in the box above.
- Read the result in kilograms — it updates as you type.
- Use the table for common values, or the reverse link to convert the other way.
Frequently asked questions
How do I convert pounds to kilograms?
Use the formula: kilograms = pounds × 0.45359237. Or simply type the value into the converter above — it applies the same formula instantly.
How many kg is 150 pounds?
150 pounds = 68.038855 kilograms.
Is this conversion exact?
Yes — the factor behind this pair is an exact international definition, and the tool shows up to 10 significant digits, so nothing is lost to rounding until the final display.