Check unit conversion calculations with the speed calculator.

main function :
● You can check the unit conversion calculation results.
● Unit information can be saved and managed in advance.
● You can conveniently perform unit conversion calculations by loading saved unit information.

[Unit conversion support range]
- m/s
- m/h
- km/s
- km/h
- in/s
- in/h
- ft/s
- ft/h
- mi/s
- mi/h
- knot(kn)
- mach


* Enter the number to be converted, or select the current unit and unit to be converted, and the resulting value will automatically change.