This app will allow you to convert Pound (Lb) to Kilogram (Kg).The following utility will enable you to convert mass/weight expressed in lbs to kgsIn 590 lbs of lentils there are 267.6196 kgs, to achieve this take 590 and just divide by 2.204622.You SI dimension symbol: M), is the base unit of mass in the International System of Units (SI) and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK). The avoirdupois (or international) pound, used in both the Imperial system and U.S. customary units, is defined as exactly 0.45359237 kg, making one kilogram approximately equal to 2.2046 avoirdupois pounds.The gram was originally defined in 1795 as the mass of one cubic centimeter of water at 4°C, making the kilogram equal to the mass of one liter of water. The prototype kilogram, manufactured in 1799 and from which the current kilogram is based, has a mass equal to the mass of 1.000025 liters of water.lbs / 2.206 = kilogramskg x 2.206 = pounds更多