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Pound (lb)

Exactly 0.45359237 kilograms (avoirdupois pound).

What is a pound?

Symbol
lb
Quantity
Weight & Mass
Unit system
US customary
Definition
Exactly 0.45359237 kilograms (avoirdupois pound).
Exact
Yes, the value is exact by definition
Source
International yard and pound agreement (1959)

Common applications

Used in the United States for body weight and groceries, and in the United Kingdom alongside stones for body weight.

Pound in other weight & mass units

Pound quick reference

Pound in other units
PoundKilogramTonne (metric ton)Ounce
1 lb= 0.45359237 kg= 0.00045359237 t= 16 oz
10 lb= 4.5359237 kg= 0.0045359237 t= 160 oz
100 lb= 45.359237 kg= 0.045359237 t= 1600 oz
1000 lb= 453.59237 kg= 0.45359237 t= 16000 oz

Where the pound fits

The next smaller weight & mass unit is the ounce (oz). 1 lb = 16 oz, and 1 oz = 0.0625 lb.

The next larger weight & mass unit is the kilogram (kg). 1 lb = 0.45359237 kg, and 1 kg ≈ 2.204622622 lb.

Frequently asked questions

How many kilograms are in one pound?
One pound = 0.45359237 kg (kilograms).
How many tonnes are in one pound?
One pound = 0.00045359237 t (tonnes).
How many ounces are in one pound?
One pound = 16 oz (ounces).