Frequency Wavelength converter

Convert electromagnetic frequency and wavelength with an explicit refractive index.

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Edit either value

Phase refractive indexDefault: 1 for vacuum. Use the index at the frequency being converted.

From

1 Hz = 0.001 kHz

Results rounded to 12 significant digits.

All frequency wavelength conversions

Choose your starting unit. Each direction has its own calculator, formula, and examples.

Convert Hertz

Convert Kilohertz

Convert Megahertz

Convert Gigahertz

Convert Wavelength in meters

Convert Wavelength in micrometers

Convert Wavelength in nanometers

Using frequency wavelength measurements

Frequency times wavelength equals c/n, where c is exactly 299792458 m/s. Tables assume vacuum (n = 1). Supply the phase refractive index for your medium and frequency; dispersion and acoustic waves need other models. Carry the same physical assumptions into subsequent physics calculations.

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Frequency WavelengthHertz to kilohertz Frequency WavelengthHertz to megahertz Frequency WavelengthHertz to gigahertz Frequency WavelengthHertz to wavelength in meters Frequency WavelengthHertz to wavelength in micrometers Frequency WavelengthHertz to wavelength in nanometers