The Weight Calculator converts between weight and mass units, and finds weight as a force from mass and gravity.
1 pound (lb) = 0.45359237 kilogram
| kilogram | 0.45359237 |
| gram | 453.59237 |
| milligram | 453592.37 |
| metric ton | 0.00045359 |
| pound (lb) | 1 |
| ounce | 16.00000007 |
| carat | 2267.96185 |
| stone [UK] | 0.07142857 |
| short ton [US] | 0.0005 |
| long ton [UK] | 0.00044643 |
| grain | 7000 |
| atomic mass unit | 2.7315970952e+26 |
| Weight (force) | 686.7 N |
| 154.376357 lbf |
1 pound = 0.45359237 kg exactly. 1 kg ≈ 2.20462 lb. 1 ounce = 28.35 g. 1 stone = 14 lb. A U.S. short ton is 2,000 lb; a UK long ton is 2,240 lb; a metric tonne is 1,000 kg. A carat, used for gems, is 0.2 g.
Worked example (defaults): 1 pound = 0.45359237 kilograms.
In physics, weight is the force of gravity on a mass: W = m × g. A 70 kg person weighs about 687 N on Earth, 113 N on the Moon and 260 N on Mars.
Why do scales show kg if weight is a force? Scales are calibrated for Earth's gravity.
How many grams in a pound? 453.59.
What is a troy ounce? 31.1 g, used for precious metals.