The range of wavelengths for microwaves is approximately 1 millimeter to 30 centimeters.
In detail:
- Shortest wavelength: About 1 millimeter (corresponding to 300 GHz frequency)
- Longest wavelength: About 30 centimeters (corresponding to 1 GHz frequency)
This range places microwaves between radio waves (which have longer wavelengths) and infrared waves (which have shorter wavelengths) in the electromagnetic spectrum.