Pounds to Grams Converter

About the lb to g calculation

One pound is exactly 453.592 grams, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The everyday US weight unit. Defined as exactly 0.45359237 kg since 1959. The everyday cooking and food-labelling unit in metric countries.

Formula

g = lb × 453.592

1 lb = 453.592 g
1 g = 0.00220462 lb

Worked example

To convert 150 lb, multiply by 453.592: 150 × 453.592 = 68,038.86 g.

Frequently asked questions

How many grams are in a pound?

There are 453.592 grams in one pound. To convert any amount, multiply the number of pounds by 453.592.

How do I convert grams back to pounds?

Divide instead of multiplying, or equivalently multiply by 0.00220462. One gram is 0.00220462 pounds.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between pounds and grams is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Pounds: the everyday US weight unit. Defined as exactly 0.45359237 kg since 1959. Grams: the everyday cooking and food-labelling unit in metric countries.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units