# lbs to kg

This converter makes instant conversions from pounds (lb) to kilograms (kg). It also provides the conversion steps. To use the converter, please provide a value in the input field. The converter will begin making conversions as the values are being typed in.

A pound (lb) is a unit of mass in the United States (US) customary systems of measurement as well as in the British imperial system. Unlike SI, the relationship between units of measurement within the US customary system is not as clear; it is necessary to know the specific conversions between the units of measurement even within the same system. For example, there are 16 ounces in 1 pound.

A kilogram (kg) is a unit of mass in the International System of Units (SI). In SI, units of measurement are comprised of a base unit and a prefix that describes the magnitude of the unit. The base unit of the kilogram is the gram, and the prefix "kilo-" indicates the magnitude 10^{3}. In other words, a kilogram is 1000 grams.

### How many kilograms in a pound?

The basis of many units of measurement have changed over the course of history as well as location. Today, the most common is the international avoirdupois pound, which is defined as exactly 0.45359237 kilograms. Based on this definition of the pound, there are 0.45359237 kilograms in a pound.

### How to convert pounds to kilograms

Based on the definition of 1 pound being exactly 0.45359237 kilograms, the pound to kilogram conversion formula is:

kg = lb × 0.45359237

Thus, to convert from pounds to kilograms, multiply a value in pounds by 0.45359237. For example, convert a bag of food weighed 5 pounds to kilograms:

5 lb = 5 × 0.45359237 kg = 2.268 kg