The exact factor, and a shortcut
One pound is defined as exactly 453.59237 grams, so to go from grams to pounds you divide by that, or multiply by 0.0022046. For a quick estimate, divide grams by 454 — or by a round 450 to do it in your head, which runs about 1% high. The reverse mnemonic worth keeping is 1 kg = 2.2046 lb.
Quick reference
| Grams | Pounds | Everyday sense |
|---|---|---|
| 28.35 g | 0.0625 lb | 1 ounce |
| 100 g | 0.2205 lb | a chocolate bar |
| 113.4 g | 0.25 lb | a stick of butter, quarter pounder |
| 250 g | 0.5512 lb | ½ a metric pack |
| 453.6 g | 1 lb | one pound exactly |
| 500 g | 1.1023 lb | half a kilogram |
| 1000 g | 2.2046 lb | one kilogram |
| 2268 g | 5 lb | a mid-size chicken |
To read the leftover as ounces, multiply the fractional pound by 16: 0.55 lb is about 8.8 oz.
Two traps worth knowing
- "A pound is 454 g" is a rounding. The exact value is 453.59237 g. Rounding to 454 adds about 0.1%, which stacks up over bulk quantities.
- Avoirdupois vs troy. Food and body weight use the 453.59 g avoirdupois pound; gold and silver use the 373.24 g troy pound. Mixing them up shifts a "pound" by nearly 18%.
Common questions
How many grams are in a pound?
Exactly 453.59237 grams. That figure was fixed by the 1959 international agreement defining one pound as 0.45359237 kilograms, so it is a definition, not a rounded estimate.
How do I convert grams to pounds quickly?
Divide the grams by about 454, or multiply by 0.0022. For a rough head figure, dividing by 450 gets you within about 1%. So 500 g is close to 1.1 lb.
Is a troy pound the same as a normal pound?
No. Everyday weights use the avoirdupois pound of 453.59 g. Precious metals use the troy pound of 373.24 g, which is lighter because it has only 12 ounces instead of 16. Buying gold by the gram and pricing it by the pound only lines up if you use troy.
