There are 2.205 (or 2 pounds 3.274 ounces) in one kilogram. One kilogram is also equal to 1000 grams. Grams, pounds and kilograms are all measurements of mass.
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Hi To answer your question: 1kg = 2.2lbs
http://wiki.answers.com/Q/How_many_lbs_to_kg

76 lbs is 34.5kg. the formula to convert kg to lbs. 34.47302012. kg. * 2.2046 lbs. 1. kg. = 76 lbs.
http://wiki.answers.com/Q/How_many_kg_is_in_76_lbs

Well technically 55kg is a unit of mass, not weight. Assuming you are talking about 55kg on earth, 55kg weighs about 539 Newtons (55kg*9.8m/s. 2. which is equivalent to 126 pounds.
http://wiki.answers.com/Q/How_many_lbs_is_55_kg
