A half pound is equal to about 226.80 grammes. One imperial pound is exactly 453.59237 grammes, and one gramme is 0.0022046 of a pound.
You can also divide a pound into 16 ounces, so 1/2 of a pound is equal to 8 ounces. One ounce is also equal to 28.349 grammes, and one gramme is equal to 0.035274 of an ounce.
Even though the imperial pound is the most common type of pound, the Troy pound is still used to measure some things. Most of the time, this unit of measure is used for precious metals like gold and silver. The Troy pound is lighter than the imperial pound because 1 Troy pound is about 373 grammes.