Convert Milligrams (mg) to Atomic Mass Unit (u) instantly — type a value in either field and the other updates automatically.

Milligrams (mg)

Atomic Mass Unit (u)

Atomic Mass Unit = Milligrams × 60221366516751998976

Milligrams = Atomic Mass Unit × 1.660540E-20

Need more than one value at a time? See the Milligrams to Atomic Mass Unit conversion table — every whole Milligrams from 1 to 200, then round numbers up to 10,000, printable too.