I believe there is 1000kg in a ton. (2.2lbs to the kilo)(the tons are different; short ton, long ton, metric ton and Isaac New ton)They are only the same, when the Missus is talking about the things in your shed, e.g. "You've got tons of crap in there"
In fact the metric system is magic. 1 metre, x 1 metre, x 1 metre (of water) is a ton of water, or if you like (still with water) 1 gram=1cc=1ml.
That much easier than 63,360 inches in a mile, or 10lb of water = 1gallon, and there are 6 1/4 gallons to the cubic foot.
Oh, and I thought it was B.P that was rich.