Kilograms to Pounds
Convert kilograms to pounds in your browser. One pound is exactly 0.45359237 kilograms, the value fixed by the international yard and pound agreement.
lb = kg ÷ 0.45359237
NIST SP 811 (2008), Appendix B.8 — pound (avoirdupois) (lb), note 22: the exact conversion factor is 4.535 923 7 E−01
Body weight, luggage allowances and gym plates are the three places this conversion turns up daily. The pound used here is the avoirdupois pound, the ordinary one, defined as exactly 0.45359237 kilograms since 1959. Precious metals use a different pound entirely, which is why a pound of gold and a pound of flour are not the same mass.
How it is calculated
lb = kg ÷ 0.45359237
The standard defines the pound in terms of the kilogram, so going from kilograms to pounds divides by that exact number. The familiar 2.2 is a rounded reciprocal and is short by about a tenth of a percent.
Common values
| kilograms | pounds |
|---|---|
| 1 | 2.2046226 |
| 5 | 11.023113 |
| 10 | 22.046226 |
| 20 | 44.092452 |
| 23 | 50.70632 |
| 50 | 110.23113 |
| 70 | 154.32358 |
| 80 | 176.36981 |
| 90 | 198.41604 |
| 100 | 220.46226 |
Questions people ask
- Is 1 kg really 2.2 pounds?
- Close, but not exact. One kilogram is 2.204623 pounds. The shortcut is fine for a shopping list and poor for a 23 kilogram baggage allowance, where it understates the weight by about a tenth of a pound.
- What is a stone?
- A stone is 14 pounds, used mainly in the United Kingdom and Ireland for body weight. 70 kilograms is 154.3 pounds, which is 11 stone 0.3 pounds.
- Why does a troy pound differ?
- Troy weights are a separate system used for precious metals, with twelve troy ounces to a troy pound instead of sixteen avoirdupois ounces. Every unit on this page is avoirdupois, which is what scales in shops and airports measure.
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Centimeters to Inches
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