I don't know what a "grcaco3" is, but if you are asking how to convert from milligrams to grams, the anwer is: divide by 1,000.
show me how to convert 0.3 mg to grain
You can not convert mg (weight) to volume (ml).
To convert mg to kg, divide by 1,000. 45654 mg = 45.654 kg.
One can convert mg to kg by dividing milligrams by 1000.
500 mg
Multiply by 1000 =72,000 mg
Convert ml to oz. then oz. to mg to get 57.51664649 mg.
It's easy because 'mg' and 'Mg' mean the same thing: milligrams.
-- The only way to convert 325 mg to 1 gram is to find another 675 mg somewhere to add to it. 1,000 mg = 1 gram 325 mg = 0.325 gram
Milliliters does not convert to milligrams.
Divide mg by 1,000,000 to get kg.
Multiply kg by 1,000,000 to get the equivalent mg