What is range of wavelengths of em waves?

Electromagnetic (EM) waves encompass a broad spectrum of wavelengths, ranging from extremely short gamma rays, which can be less than 0.01 nanometers, to very long radio waves, which can exceed 100 kilometers. The entire range of EM waves is typically divided into categories, including gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, and radio waves. The visible spectrum, which is the portion of EM radiation detectable by the human eye, ranges from about 400 nanometers (violet) to 700 nanometers (red). Overall, the wavelength range of EM waves spans from about 10^-12 meters to over 10^3 meters.