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Frequency  ‹―›  Wavelength Calculator

Here is a simple JavaScript routing that converts between frequency and wavelength. Wavelength and frequency are related by the following formula:

Equation Frequency Units Wavelength Units
c = λ * ν * √εr, where  c = speed of light
            λ = wavelength
                ν = frequency
            εr = relative permittivity
G = GHz
M = MHz
k = kHz
H = Hz
k = kilometer
m = meter
cm = centimeter
mm = mm
nmi = nautical mile
mi = statute mile
yd = yard
ft = foot
in = inch
mil = 1000ths of an inch

Relative Dielectric Constant

Disclaimer: This calculator has been tested and is believed to be accurate to 6 significant figures. User assumes all risks for its use.

A table of calculated values can be found here: Frequency - Wavelength Conversion Table

Here are some familiar objects and their equivalent wavelength-related frequencies in air:

Hummer H2 (189.8 in) wavelength = 62.2 MHz - RF Cafe
Hummer H2 (189.8 in) = 62.2 MHz


Golden Gate Bridge (6,450 ft) wavelength = 153 kHz - RF Cafe
Golden Gate Bridge (6,450 ft) = 153 kHz


Earth Equatorial Diameter (7,926 mi) wavelength = 23.5 Hz - RF Cafe
Earth Equatorial Diameter (7,926 mi) = 23.5 Hz

0402 Surface Mount Capacitor (0.040 in) wavelength = 295 GHz - RF Cafe
0402 Surface Mount Capacitor (0.040 in) = 295 GHz


Ticonderoga #2 Wooden Pencil (7.5'') wavelength = 1.57 GHz -RF Cafe
Ticonderoga #2 Wooden Pencil (7.5") = 1.57 GHz


Meter Stick (1 m) wavelength = 300 MHz - RF Cafe
Meter Stick (1 m) = 300 MHz


Boeing 747-400 (231'10'') wavelength = 4.24 MHz - RF Cafe
Boeing 747-400 (231'10") = 4.24 MHz


Channel Tunnel, 'Chunnel' (37 km) wavelength = 8.10 kHz -RF Cafe
Channel Tunnel, "Chunnel" (37 km) = 8.10 kHz

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Kirt Blattenberger,

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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