Ans

Unit converter

Pounds to grams.

Convert lb to g and g to lb. Type in either box and the other follows. Recipes from US sources give weights in pounds and ounces; UK kitchen scales read grams.

lb → gExact definition
—
Pounds to grams — common values, to 6 significant figures.
lbg
0.25 lb113.398 g
0.5 lb226.796 g
1 lb453.592 g
2 lb907.185 g
3 lb1360.78 g
4 lb1814.37 g
5 lb2267.96 g
10 lb4535.92 g
20 lb9071.85 g
50 lb22679.6 g
1 lb=453.59237 g 1 g=0.002204622622 lb

Definitions

  • The international avoirdupois pound is exactly 0.453 592 37 kg, agreed in 1959 — which is why pounds and kilograms convert exactly.
  • The gram is a thousandth of a kilogram, and the unit food packaging and recipes are labelled in.
  • This conversion is exact by definition. 1 lb = 453.59237 g.
  • Everything here is mass, not force. The pound is defined as exactly 0.453 592 37 kg, so pound-to-kilogram conversion is exact.

How it works

One direction multiplies and the other divides by the same number, so nothing is lost by going back and forth.

The value passes through kg, the unit every other mass & weight unit on the site is defined against, rather than a number written into this page on its own. That is why the figure here, the figure in the table above and the general mass & weight converter always agree.

Display precision limits significant figures rather than decimal places, because one fixed number of decimals is useless across a range this wide. Very large and very small results switch to scientific notation with a proper superscript exponent. The editable box always holds a plain number at full working precision, so you can carry on from either side.

Common questions this answers: how many grams in a pound (453.592), how many pounds in a gram (0.00220462), and what 5 lb is in grams (2267.96 g).

From the maker of Ans — a scientific calculator you can own. Same idea: a proper instrument, nothing in the way.