About the Units
astronomical unit (ua)
The average distance between the Earth and the Sun, used in astronomical measurements.
Learn more about astronomical units
bohr radius (a₀)
A unit of length used to describe the size of atoms, based on quantum mechanics.
Common Conversions
- 1 ua = 2.8269906e21 a₀
- 3.5373306e-22 ua = 1 a₀