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BSEE - KB3UON

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 World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:

AirplanesAndRockets.com

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Innovative Power Products Combiners / Dividers

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 * √ε_r,	where c = speed of light λ = wavelength ν = frequency ε_r = 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

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) = 153 kHz

Earth Equatorial Diameter (7,926 mi) = 23.5 Hz

0402 Surface Mount Capacitor (0.040 in) = 295 GHz

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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