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1 tonne is 1000 kilograms.

1 kg is 1000 g.

1 g is 1000 mg.

So 1 tonne is 1000 x 1000 x 1000 milligrams = 1 000 000 000 mg.

1 billion milligrams.

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Wiki User

11y ago
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Wiki User

7y ago

There are 1 billion mg.

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Q: How many milligrams is in a tonne?
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