**Full name:** pound

**Plural form:** pounds

**Symbol:** lb

**Alternate spelling:** lbs

**Category type:** weight

**Scale factor:** 0.45359237

The SI base unit for mass is the kilogram.
The SI derived unit for weight or force is the newton.

1 kilogram is equal to 2.2046226218488 lb.

Valid units must be of the **weight** type.

You can use this form to select from known units:

The pound (abbreviation: lb) is a unit of mass or weight in a number of different systems, including English units, Imperial units, and United States customary units. Its size can vary from system to system. The most commonly used pound today is the international avoirdupois pound. The international avoirdupois pound is equal to exactly 453.59237 grams. The definition of the international pound was agreed by the United States and countries of the Commonwealth of Nations in 1958. In the United Kingdom, the use of the international pound was implemented in the Weights and Measures Act 1963. An avoirdupois pound is equal to 16 avoirdupois ounces and to exactly 7,000 grains.

lb to marco [Spanish]

lb to atomic mass unit [1998]

lb to ton [short, US]

lb to last [US, wool]

lb to libra [Portugal, Spain]

lb to mercantile pound

lb to hyl

lb to onça [Portuguese]

lb to kilodalton

lb to tovar [Bulgaria]