1 milligram equals how many millileters?

It depends on what you are measuring. 1 mg of gold will have a much smaller volume than 1 mg of air.

1 mg of water at 4 degrees Celsius occupies almost exactly 1 ml. It depends on what you are measuring. 1 mg of gold will have a much smaller volume than 1 mg of air.

1 mg of water at 4 degrees Celsius occupies almost exactly 1 ml.