Frequency and Free-Space Wavelength Converter

Convert between frequency and free-space wavelength in commonly used RF and microwave engineering units.

INPUT

Enter the known value

Enter either a frequency or a free-space wavelength and select its unit.

Known value Frequency and wavelength values must be greater than zero.

Input unit

Results calculated from 1 GHz.

EQUIVALENT VALUES

Frequency and wavelength

All results represent the same free-space relationship.

Hertz 1000000000 Hz

Kilohertz 1000000 kHz

Megahertz 1000 MHz

Gigahertz 1 GHz

Metres 0.299792458 m

Centimetres 29.9792458 cm

Millimetres 299.792458 mm

CALCULATION METHOD

Equations

c = 299,792,458 m/s

λ = c / f

f = c / λ

1 GHz = 1000 MHz = 10⁹ Hz

1 m = 100 cm = 1000 mm

ENGINEERING USE

Review the stated assumptions

This calculator is an engineering aid. Confirm that its units, equations and assumptions are appropriate for the application before using the result in a design, test limit or specification.