Pounds to Kilograms (lb to kg)
1 lb = 0.453592 kg
and 1 kg = 2.20462 lb
How to convert Pounds to Kilograms
kg = lb × 0.45359237
To convert, multiply the number of pounds by 0.45359237. Example: 10 lb × 0.45359237 = 4.53592 kg.
The international avoirdupois pound is defined as exactly 0.45359237 kilograms.
Used to convert US body weight, dumbbell and barbell weights, baggage limits and recipe quantities to kilograms.
Mental shortcut: halve it and subtract 10% (× 0.45) (underestimates by about 0.8%).
Pounds to Kilograms conversion chart
| Pounds | Kilograms | Stone & pounds |
|---|---|---|
| 1 lb | 0.4536 kg | 1 lb |
| 2 lb | 0.9072 kg | 2 lb |
| 3 lb | 1.36 kg | 3 lb |
| 4 lb | 1.81 kg | 4 lb |
| 5 lb | 2.27 kg | 5 lb |
| 6 lb | 2.72 kg | 6 lb |
| 7 lb | 3.18 kg | 7 lb |
| 8 lb | 3.63 kg | 8 lb |
| 9 lb | 4.08 kg | 9 lb |
| 10 lb | 4.54 kg | 10 lb |
| 11 lb | 4.99 kg | 11 lb |
| 12 lb | 5.44 kg | 12 lb |
| 13 lb | 5.9 kg | 13 lb |
| 14 lb | 6.35 kg | 1 st 0 lb |
| 15 lb | 6.8 kg | 1 st 1 lb |
| 16 lb | 7.26 kg | 1 st 2 lb |
| 17 lb | 7.71 kg | 1 st 3 lb |
| 18 lb | 8.16 kg | 1 st 4 lb |
| 19 lb | 8.62 kg | 1 st 5 lb |
| 20 lb | 9.07 kg | 1 st 6 lb |
| 21 lb | 9.53 kg | 1 st 7 lb |
| 22 lb | 9.98 kg | 1 st 8 lb |
| 23 lb | 10.43 kg | 1 st 9 lb |
| 24 lb | 10.89 kg | 1 st 10 lb |
| 25 lb | 11.34 kg | 1 st 11 lb |
| 26 lb | 11.79 kg | 1 st 12 lb |
| 27 lb | 12.25 kg | 1 st 13 lb |
| 28 lb | 12.7 kg | 2 st 0 lb |
| 29 lb | 13.15 kg | 2 st 1 lb |
| 30 lb | 13.61 kg | 2 st 2 lb |
| 35 lb | 15.88 kg | 2 st 7 lb |
| 40 lb | 18.14 kg | 2 st 12 lb |
| Pounds | Kilograms | Stone & pounds |
|---|---|---|
| 45 lb | 20.41 kg | 3 st 3 lb |
| 50 lb | 22.68 kg | 3 st 8 lb |
| 55 lb | 24.95 kg | 3 st 13 lb |
| 60 lb | 27.22 kg | 4 st 4 lb |
| 65 lb | 29.48 kg | 4 st 9 lb |
| 70 lb | 31.75 kg | 5 st 0 lb |
| 75 lb | 34.02 kg | 5 st 5 lb |
| 80 lb | 36.29 kg | 5 st 10 lb |
| 85 lb | 38.56 kg | 6 st 1 lb |
| 90 lb | 40.82 kg | 6 st 6 lb |
| 95 lb | 43.09 kg | 6 st 11 lb |
| 100 lb | 45.36 kg | 7 st 2 lb |
| 110 lb | 49.9 kg | 7 st 12 lb |
| 120 lb | 54.43 kg | 8 st 8 lb |
| 130 lb | 58.97 kg | 9 st 4 lb |
| 140 lb | 63.5 kg | 10 st 0 lb |
| 150 lb | 68.04 kg | 10 st 10 lb |
| 160 lb | 72.57 kg | 11 st 6 lb |
| 170 lb | 77.11 kg | 12 st 2 lb |
| 180 lb | 81.65 kg | 12 st 12 lb |
| 190 lb | 86.18 kg | 13 st 8 lb |
| 200 lb | 90.72 kg | 14 st 4 lb |
| 210 lb | 95.25 kg | 15 st 0 lb |
| 220 lb | 99.79 kg | 15 st 10 lb |
| 230 lb | 104.33 kg | 16 st 6 lb |
| 240 lb | 108.86 kg | 17 st 2 lb |
| 250 lb | 113.4 kg | 17 st 12 lb |
| 260 lb | 117.93 kg | 18 st 8 lb |
| 270 lb | 122.47 kg | 19 st 4 lb |
| 280 lb | 127.01 kg | 20 st 0 lb |
| 290 lb | 131.54 kg | 20 st 10 lb |
| 300 lb | 136.08 kg | 21 st 6 lb |
Values rounded to 2 decimal places (4 below 1). Use the converter above for more precision.
Popular conversions
Frequently asked questions
How many kilograms are in 1 pound?
1 pound = 0.453592 kilograms. The international avoirdupois pound is defined as exactly 0.45359237 kilograms.
How do I convert pounds to kilograms?
Multiply the number of pounds by 0.45359237. Example: 10 lb × 0.45359237 = 4.53592 kg.
Is there a quick way to estimate lb to kg in your head?
Yes — halve it and subtract 10% (× 0.45). This underestimates by about 0.8%. Use the exact formula (kg = lb × 0.45359237) when precision matters.
How do I convert kilograms back to pounds?
Use lb = kg ÷ 0.45359237 — divide the number of kilograms by 0.45359237. See the Kilograms to Pounds page for a full chart.