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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1. Measure the weight of an item in pounds using a scale. 2. Multiply the number of pounds by 2.2 kilograms. For example, if your item weights 50 pounds, you would multiply 50 pounds
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1 kg is approximately 2.2 lbs. To convert 40 lbs into kg divide 40 by 2.2. So: 40/2.2 = 18.18. = 18.2 kg (1 decimal place. Algebraic Steps / Dimensional Analysis Formula. 40. lb.
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if you round the numbers it would be about 0.9 kg or 907.2 g. :
http://wiki.answers.com/Q/How_many_kg_is_2_lbs
