Wavelength in centimeters (λ cm)

Electromagnetic wavelength in vacuum, in centimeters.

What is a centimeter of wavelength?

Used for microwaves, Wi-Fi and radar, and in radio astronomy, which has a well-known 21 cm hydrogen line.

Wavelength in centimeters in other units
Wavelength in centimeters	Gigahertz	Megahertz	Wavelength in meters
1 λ cm	= 29.9792458 GHz	= 29979.2458 MHz	= 0.01 λ m
10 λ cm	= 2.99792458 GHz	= 2997.92458 MHz	= 0.1 λ m
100 λ cm	= 0.299792458 GHz	= 299.792458 MHz	= 1 λ m
1000 λ cm	= 0.0299792458 GHz	= 29.9792458 MHz	= 10 λ m

The next smaller frequency & wavelength unit is the gigahertz (GHz). 1 λ cm = 29.9792458 GHz, and 1 GHz = 29.9792458 λ cm.

The next larger frequency & wavelength unit is the millimeter of wavelength (λ mm). 1 λ cm = 10 λ mm, and 1 λ mm = 0.1 λ cm.

How many gigahertz are in one centimeter of wavelength?: One centimeter of wavelength = 29.9792458 GHz (gigahertz).
How many megahertz are in one centimeter of wavelength?: One centimeter of wavelength = 29979.2458 MHz (megahertz).
How many meters of wavelength are in one centimeter of wavelength?: One centimeter of wavelength = 0.01 λ m (meters of wavelength).