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Best Answer

1000mg = 1g

So 1/1000g = 1mg


So 15/1000g = 15mg


Grab your calculator! 15/1000 = 0.015. That's it. Basically just divide mg by 1000 to turn it into grams. Unit calculations and conversions are extremely important in all sciences. They're also very simple, so just practice a few.

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Wiki User

14y ago
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Wiki User

12y ago

its 45,000 milligrams you know im a 5th grader

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Wiki User

14y ago

1,000 mg = 1 gram 1.5 grams = (1.5 x 1,000) = 1,500 mg

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Wiki User

15y ago

15000. 1 gram = 1000 mg.

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Anonymous

Lvl 1
3y ago

15mg x4 how much is grams

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Q: 45 grams equal how many milligrams?
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