About the Units
millimeter (mm)
A tiny length unit equal to 0.001 meters, used in precision engineering.
atomic unit of length (a.u. of length)
A reference unit of length used in quantum mechanics and atomic physics.
Common Conversions
- 1 mm = 18897262.0 a.u. of length
- 5.291772e-8 mm = 1 a.u. of length