Conversion formula just how to convert 21 kilograms come pounds?

We know (by definition) that:1⁢kg≈2.2046226⁢lb

We can set up a relationship to solve for the number of pounds.

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Now, us cross multiply to solve for ours unknown x:




Conversion in the contrary direction

The inverse of the conversion variable is the 1 pound is equal to 0.0215996366666667 times 21 kilograms.

It can also be expressed as: 21 kilograms is same to 1 0.0215996366666667 pounds.


An almost right numerical an outcome would be: twenty-one kilograms is around forty-six point two nine pounds, or alternatively, a lb is about zero suggest zero 2 times twenty-one kilograms.

Units involved

This is how the devices in this conversion space defined:


The kilogram is the basic unit of mass in the international System of devices (the Metric system) and is characterized as being equal to the mass of the worldwide Prototype of the Kilogram. The avoirdupois (or international) pound, used in both the imperial and US customary systems, is identified as exactly 0.45359237 kg, make one kilogram roughly equal to 2.2046 avoirdupois pounds. Other classic units the weight and also mass around the world are likewise defined in regards to the kilogram, making the IPK the main standard for virtually all devices of mass on Earth.

Wikipedia page of kilograms


The pound or pound-mass (abbreviations: lb, lbm for most pounds) is a unit that mass offered in the royal units, United states customary and also other equipment of measurement. A variety of different interpretations have to be used, the most common today gift the global avoirdupois lb which is legally defined as precisely 0.45359237 kilograms, and which is divided into 16 avoirdupois ounces.<3> The worldwide standard symbol because that the avoirdupois lb is lb.The unit is descended from the roman inn libra (hence the abbreviation lb). The English word lb is cognate with, amongst others, German Pfund, netherlands pond, and also Swedish pund. All ultimately derive indigenous a borrowing right into Proto-Germanic the the Latin expression lībra pondō a lb by weight, in which the word pondō is the ablative instance of the Latin noun pondus.

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Wikipedia page of pounds


<1> The precision is 15 far-reaching digits (fourteen number to the best of the decimal point).