Some airlines charge more than the ticket for a kilo over. Others do not care. The question is whether your bag will pass. This calculator tells you, BEFORE you leave home. Pick your airlines and ticket types, choose the bags you own, add the clothes you plan to bring. It weighs each item by size and gender, checks the totals against airline limits, flags which carriers run strict, and lets you shift weight between bags until it fits. Printable packing list at the end. A few minutes, free.