Convert Pounds to Kilograms
Convert pounds (lb) to kilograms (kg) with the 0.453592 factor. Includes body weight, luggage limits, shipping, and gym weight plate conversions.
Weight
Detailed Explanation
Pounds to Kilograms Conversion
The formula is:
kilograms = pounds × 0.453592
Or equivalently, 1 pound equals approximately 0.4536 kg.
Quick Reference Table
| lb | kg | Context |
|---|---|---|
| 1 | 0.4536 | Standard unit |
| 5 | 2.268 | Bag of flour |
| 10 | 4.536 | Bowling ball |
| 25 | 11.34 | Weight plate |
| 45 | 20.41 | Barbell plate |
| 100 | 45.36 | Heavy luggage |
| 150 | 68.04 | Average person |
| 200 | 90.72 | Large person |
Body Weight Conversions
Body weight is one of the most frequent reasons people convert between pounds and kilograms:
| lb | kg |
|---|---|
| 100 | 45.4 |
| 120 | 54.4 |
| 140 | 63.5 |
| 160 | 72.6 |
| 180 | 81.6 |
| 200 | 90.7 |
| 220 | 99.8 |
| 250 | 113.4 |
Airline Luggage Limits
Most international airlines specify luggage limits in kilograms:
- Carry-on: 7–10 kg (15–22 lb)
- Checked bag: 23 kg (50.7 lb) economy, 32 kg (70.5 lb) business
- Excess baggage fees apply per kilogram over the limit
The "Divide by 2.2" Shortcut
For quick mental math: divide pounds by 2.2 to get kilograms.
- 150 lb ÷ 2.2 ≈ 68.2 kg (exact: 68.04)
- 200 lb ÷ 2.2 ≈ 90.9 kg (exact: 90.72)
This shortcut is accurate to within 0.3%.
Use Case
A traveler packing for an international flight needs to convert their luggage weight from pounds to kilograms to ensure they meet the airline's checked bag limit.