How many kilograms are equivalent to 120 pounds?

1 kg = about 2.2 lbs (exactly 2.2046226218 lbs). To answer the above question, you need to divide 120 by 2.2 or 2.2046226218 or maybe 2.205, depending on how exact you want to be:

120 lbs / 2.205 = about 54.4 kg