Kilogram, International System of Units (SI) me mass ke base unit hae. Iske vigyan, engineering aur len-den me dunia bhar me kaam me laawa jaae hae. Ek kilogram ke mass ek litre paani ke baraabar hae. Ek kilogram 2.2 pounds ke baraabar hae. Ek tonne, ek hajaar kilogram ke baraabar hae.