Convert pounds to grams
1 lb = 453.592 g
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How many grams are in a pound?
One pound is 453.59237 grams. To convert any amount, multiply by 453.59237. Going the other way, one gram is 0.00220462262 pounds.
What is the formula to convert lb to g?
Multiply the pound figure by 453.59237. So g = lb × 453.59237. For a quick mental estimate, multiplying by about 454 gets you within a percent or so, which is close enough for most everyday purposes.
What does a pound actually look like?
One pound is a block of butter, roughly. The international pound is exactly 0.45359237 kilograms. It is still the everyday body-weight and grocery unit in the United States.
And what is a gram?
One gram is about the mass of a paperclip. The gram is the unit of nutrition labels and recipes worldwide, and of postal rates in most of the metric world.
Is this conversion exact?
Yes. Since the 1959 international yard and pound agreement, the imperial and metric systems are related by exact definitions rather than measurements — the inch is exactly 25.4 mm and the pound exactly 0.45359237 kg. Everything derived from those, including this conversion, is therefore exact. Round at the end rather than partway through, since rounding lb before converting introduces an error the conversion then multiplies.
About lb to g
How to convert pounds to grams
Multiply by 453.59237. One pound is 453.59237 grams, and one gram is 0.00220462262 pounds.
g = lb × 453.59237
Worked example
10 lb = 4535.924 g. For a sense of scale, one pound is a block of butter, roughly, and one gram is about the mass of a paperclip.
About the pound
The international pound is exactly 0.45359237 kilograms. It is still the everyday body-weight and grocery unit in the United States.
About the gram
The gram is the unit of nutrition labels and recipes worldwide, and of postal rates in most of the metric world.
Quick reference
| pounds | grams |
|---|---|
| 1 lb | 453.592 g |
| 2 lb | 907.185 g |
| 5 lb | 2267.96 g |
| 10 lb | 4535.92 g |
| 25 lb | 11339.8 g |
| 50 lb | 22679.6 g |
| 100 lb | 45359.2 g |
| 1000 lb | 453592 g |
Getting it right
This conversion is exact by definition, so the only limit on accuracy is how many digits you keep. Round at the end rather than partway through — rounding lb to a whole number before converting introduces an error that the conversion then multiplies.
Other weight & mass conversions
Convert grams back to pounds, or pick any other pair with the full unit converter. Related: lb to kg, lb to oz, lb to t.