Conversion formula just how to transform 120 pounds to kilograms?

We understand (by definition) that:1⁢lb≈0.45359237⁢kg

We can collection up a proportion to solve for the variety of kilograms.

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Now, we cross multiply to settle for our unknown x:




Conversion in opposing direction

The inverse of the conversion variable is that 1 kilogram is same to 0.0183718551820731 times 120 pounds.

It can additionally be express as: 120 pounds is equal to 1 0.0183718551820731 kilograms.


An almost right numerical an outcome would be: one hundred and twenty pounds is around fifty-four allude four 2 kilograms, or alternatively, a kilogram is about zero suggest zero 2 times one hundred and twenty pounds.

Units involved

This is just how the systems in this conversion are defined:


The lb or pound-mass (abbreviations: lb, lbm for most pounds) is a unit of mass provided in the royal units, United says customary and also other equipment of measurement. A number of different meanings have been used, the most typical today gift the international avoirdupois lb which is legally defined as exactly 0.45359237 kilograms, and which is divided into 16 avoirdupois ounces.<3> The worldwide standard symbol because that the avoirdupois pound is lb.The unit is descended from the roman libra (hence the abbreviation lb). The English word lb is cognate with, among others, German Pfund, dutch pond, and Swedish pund. All eventually derive indigenous a borrowing right into Proto-Germanic of the Latin expression lībra pondō a pound by weight, in which the word pondō is the ablative instance of the Latin noun pondus.

Wikipedia page of pounds


The kilogram is the basic unit of mass in the worldwide System of units (the Metric system) and also is defined as being equal to the massive of the global Prototype the the Kilogram. The avoirdupois (or international) pound, used in both the imperial and also US customary systems, is identified as specifically 0.45359237 kg, make one kilogram roughly equal to 2.2046 avoirdupois pounds. Other timeless units that weight and also mass approximately the people are also defined in regards to the kilogram, make the IPK the primary standard for essentially all devices of fixed on Earth.

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Wikipedia page of kilograms


<1> The precision is 15 significant digits (fourteen digits to the ideal of the decimal point).