Conversion Factor for Mass (gram to kg): Everything that can be measured has some units may it be weight, length, time etc. also, there is not just one unit associated with any time of measurement however there are many. For example: We can measure time in hours, and seconds or minutes etc. every type of measurement has particular type of units in which it is measured and;But all these units are connected in some way for each type of measurement, for example 1 hour has 60 minutes and 1 minute has 60 seconds and so on. In case of length as well e use units like km, m, cm etc. and all these units are again connected by some value. . . . . . . . . .