About the Units
exameter (Em)
A very large length unit equal to 10^18 meters.
foot (U.S. survey) (ft (U.S. survey))
A slightly different foot unit used in land surveying.
Common Conversions
- 1 Em = 3280833300000000000.0 ft (U.S. survey)
- 3.048006e-19 Em = 1 ft (U.S. survey)