# Atomic Mass Unit

on . Posted in Mass Conversion

Atomic mass unit, abbreviated as u or amu, is the unit of mass used to measure atoms and molecules.  One atomic mass unit is 1/12 of the mass of one atom of the isotope carbon-12.

When referring to the mass of atoms or molecules, the atomic mass unit is often used because the actual masses involved are often very small in everyday terms.  It provides a more manageable scale for expressing these masses compared to kilograms or grams.

### Atomic Mass Unit

• $$\large{ u = 3.66086 \;X\;10^{-27} \; lbm }$$
• $$\large{ u = 1.66054 \;X\;10^{-27} \; kg }$$

## Atomic Mass Unit Conversion

Multiply By To Get
1 atomic mass unit, amu
1.66054E-22 centigram
1.66054E-23 decigram
1.66054E-25 dekagram
1.66054E-33 gigagram, Gg
1.66054E-24 gram, g
1.66054E-27 kilogram, kg
1.66054E-30 megagram, Mg
1.66054E-18 microgram
1.66054E-21 milligram, mg
5.85738E-26 ounce, oz
3.66086E-27 pound, lb
1.83043E-30 short ton
1.63431E-30 long ton
1.66054E-30 metric ton
3.66086E-30 kip Tags: Mass Constant