Lbs to Kg Converter
Convert pounds to kilograms instantly. Free online lbs to kg converter with common conversion reference table.
Formula
kg = lbs ÷ 2.20462
Common Conversions
How to Convert Pounds to Kilograms
1 lb = 0.45359 kg. Divide pounds by 2.20462 (or multiply by 0.45359) to get kilograms. So 150 lbs ÷ 2.20462 = 68.04 kg. The pound has been defined as exactly 0.45359237 kg since the international agreement of 1959, identical in the UK, US and Canada.
Quick mental method: divide pounds by 2.2. 150 lbs ÷ 2.2 ≈ 68 kg, 200 lbs ÷ 2.2 ≈ 91 kg. Accurate within 0.2%, fine for body weight, luggage allowances and shipping. Use the full 0.45359 only when sub-0.1% accuracy is needed.
Common Pounds to Kilograms Conversions
| Pounds | Kilograms |
|---|---|
| 1 lb | 0.45 kg |
| 10 lbs | 4.54 kg |
| 50 lbs | 22.68 kg |
| 100 lbs | 45.36 kg |
| 150 lbs | 68.04 kg |
| 180 lbs | 81.65 kg |
| 200 lbs | 90.72 kg |
| 250 lbs | 113.40 kg |
Frequently Asked Questions
How accurate is dividing by 2.2?
Within about 0.2% for most weights. 150 lbs gives 68.18 kg by dividing by 2.2 vs 68.04 kg exact. Close enough for body weight and luggage; not for precision lab work.
Do airline luggage limits use kg or lbs?
Most non-US carriers use kg (23 kg standard checked), US carriers usually use lbs (50 lbs). The numbers are roughly equivalent. 50 lbs ≈ 22.68 kg, so a 50 lb US allowance is slightly under the typical 23 kg international standard.
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