Frequency Wavelength Converter

Convert electromagnetic frequency and vacuum wavelength using the exact speed of light, from hertz and gigahertz to metres and nanometres.

Convert instantly

Enter a value and choose the units. Your answer updates as you type.

Value

From

Result

0.001 Kilohertz (kHz)

Quick reference

Hertz (Hz)1 base units
Kilohertz (kHz)1000 base units
Megahertz (MHz)1000000 base units
Gigahertz (GHz)1000000000 base units
Terahertz (THz)1000000000000 base units
Metre (m)1 base units
Centimetre (cm)0.01 base units

About the Frequency Wavelength Converter

Frequency and wavelength are inverse descriptions of an electromagnetic wave in vacuum. This tool uses the defined vacuum speed of light, 299,792,458 m/s; wavelengths in a material are shorter by the material's refractive index, so this result is not a substitute for a propagation model in glass, water, or a transmission line.

For example, a 1 GHz carrier has a 0.299792458 m vacuum wavelength. Use the Data Transfer Converter for a communication rate rather than carrier frequency, and the Luminance Converter when an optical specification concerns visible brightness instead of wave spacing.

Frequently asked questions

What does the frequency wavelength measure?

Electromagnetic waves in vacuum obey λ = c/f, where c is exactly 299,792,458 m/s. Radio links, microwave design, spectroscopy, and optical engineering use this inverse relationship; material media require a refractive-index adjustment.

What is a useful reference conversion for frequency wavelength?

1 GHz corresponds to a vacuum wavelength of 0.299792458 metres.

Are the factors on this page exact?

SI prefixes and internationally defined units use their standard factors. Legacy and customary factors are retained at their published scientific definitions and may be rounded only for display.

Take this calculation further

Browse the converters calculators collection for more tools in this subject.

For a related calculation, use Sound Level Converter to convert sound pressure in pascals and dB SPL, or acoustic intensity in W/m² and dB, with explicit references and correct logarithmic formulas. Alternatively, use Digital Image Resolution Converter to convert image resolution between DPI, PPI, pixels per centimetre, and pixel count for a specified physical print width.

For the underlying method, read Understanding Sound Decibels: Why the Scale Isn't Linear.