2 pounds = 907.18474 grams
4.51 kilos. The actual conversion of 1 kilogram is equal to 2.204622622 pounds. For everyday use, rounding to 2.2 should be enough. One pound is 0.45359237 kilogram, or 0.45 kg for everyday use.
1.5 pounds
40
1 pound = 453.59237 grams. To convert a value in pounds to grams, multiply by 453.59237.