About the Units
astronomical unit (ua)
The average distance between the Earth and the Sun, used in astronomical measurements.
Learn more about astronomical units
foot (U.S. survey) (ft (U.S. survey))
A slightly different foot unit used in land surveying.
Common Conversions
- 1 ua = 490805800000.0 ft (U.S. survey)
- 2.037466e-12 ua = 1 ft (U.S. survey)