Well? Reasons for: simplicity The rest of the world (well 193 or 195 of the others) is on the metric system Travel would be made simpler Foreigners would have an easier time [b][i][u]Economy:[/u][/i][/b] Manufacturers wouldn't have to have dual production. Converting would make them more efficient in terms of time and money, because inventory for the imperial system would be much smaller, if it is kept at all. This would boost our economy, lowering the prices of many things because of this new efficiency. This [i]may[/i] (more than likely) lower the price of imported items, as we are paying for something that is being produced uniformly as opposed to made specially for our imperial needs. Also, the medical community is already using it, along with a few others (ever hear of a 9mm pistol?) Arguments against: [b]'Murica[/b] That's not an argument, but I felt that it's a common "argument" so it's already been said. [b]it's got more factors, therefore it is superior[/b] Yes it's got more factors. But it becomes less practical as the units become larger (compare dividing a foot by 3, 4, or 6, as opposed to a mile) [b]tradition: were used to this tradition, and want to stick to our British roots[/b] Change is for the better, as already mentioned, for economic reasons. As our economy begins to decline, converting will bring our economy back. Also, we rejected British spelling (colour is just an example), royalty, taxes (while we were a colony). If your argument is to remain like Britain, well, they've converted officially in 1965