Conversion formula how to transform 250 pounds to kilograms?

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

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

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Now, us cross multiply to deal with for our unknown x:




Conversion in the opposite direction


An almost right numerical result would be: two hundred and fifty pounds is around one hundred and also thirteen allude four zero kilograms, or alternatively, a kilogram is about zero allude zero one times 2 hundred and also fifty pounds.

Units involved

This is how the units in this conversion are defined:


The lb or pound-mass (abbreviations: lb, lbm for many pounds) is a unit of mass used in the imperial units, United states customary and other systems of measurement. A variety of different meanings have to be used, the most typical today gift the worldwide avoirdupois pound which is legally identified as specifically 0.45359237 kilograms, and which is divided into 16 avoirdupois ounces.<3> The international standard symbol because that the avoirdupois lb is lb.The unit is lower from the roman inn libra (hence the abbreviation lb). The English word pound is cognate with, amongst others, German Pfund, dutch pond, and also Swedish pund. All at some point derive native a borrowing into Proto-Germanic of the Latin expression lībra pondō a lb by weight, in which the word pondō is the ablative instance of the Latin noun pondus.

Wikipedia page of pounds


The kilogram is the base unit of fixed in the worldwide System of devices (the Metric system) and also is identified as being same to the massive of the international Prototype of the Kilogram. The avoirdupois (or international) pound, provided in both the imperial and also US customary systems, is characterized as specifically 0.45359237 kg, do one kilogram approximately equal to 2.2046 avoirdupois pounds. Other classic units that weight and mass approximately the people are likewise defined in regards to the kilogram, do the IPK the primary standard for practically all units of fixed on Earth.

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Wikipedia web page of kilograms


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