1. Divide the number of pounds by 2,204.623 to convert to metric tonnes. For example, if you have 10,000 pounds, divide 10,000 by 2,204.623 to get 4.54 metric tonnes. 2. Multiply
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A metric tonne, or tonne (t) is 1000 kg, or roughly 2200 pounds.
http://wiki.answers.com/Q/What_are_metric_tonnes

One metric tonne is equal to 2 204.62262 pounds, as opposed to a short ton, which is
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1 metric tonne = 1,000 kilograms so 12,500 metric tonnes=12,500metric tonnes*1,000 kilograms/metric tonne=12,500,000 kilograms
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