Ubi caritas...well, if you absolutely MUST ignore such things your kilogram will be off by a bit, sort of like a butcher with his thumb pushing up or pushing down the scale, but since gravitation is universal it would probably be somewhat difficult to find a place without said anomalies or others waiting to be discovered. So in charity and love I'll allow 1 kg. mass = 1 kg. weight (+/- a smidge), and this can go up or down from there.

Kind, charitable, caring, sharing, tolerant to a fault -- c'est moi.