Frequency Converter
Convert radio frequencies between Hz, kHz, MHz and GHz and calculate wavelength.
Inputs
Wavelength
0.124914m
GHz
2.400000000000
MHz
2,400.000000000
kHz
2,400,000.000000
Hz
2,400,000,000
Wavelength
12.4914cm
Step by step
Values used
Frequency Value = 2.40; Input Unit = GHz
Wavelength from frequency
wavelength = speed_of_light / frequency
Wavelength
= 0.124914 m
GHz
= 2.400000000000
MHz
= 2,400.000000000
kHz
= 2,400,000.000000
Hz
= 2,400,000,000
Wavelength
= 12.4914 cm
How it works
Frequency units differ only by powers of 1000 (Hz, kHz, MHz, GHz), so converting between them is a simple multiplication or division. Wavelength is derived from frequency using the universal relation wavelength = speed_of_light / frequency, which for radio waves traveling through air/vacuum uses c ≈ 299,792,458 m/s. Higher frequencies have proportionally shorter wavelengths — 2.4 GHz WiFi has a wavelength of about 12.5 cm, while 5 GHz WiFi's wavelength is about half that, around 6 cm.
Formula
Wavelength from frequency
wavelength = speed_of_light / frequency
- c
- Speed of light, 299,792,458 m/s
- f
- Frequency in Hz
Frequently Asked Questions
Why does wavelength matter for wireless networking?
Wavelength determines antenna size (efficient antennas are typically a fraction or multiple of the wavelength) and affects how signals interact with obstacles — shorter wavelengths (higher frequencies) are more easily blocked by small objects and penetrate walls less effectively than longer wavelengths.
What is the wavelength of 2.4GHz WiFi?
2.4 GHz has a wavelength of about 12.5 cm (299,792,458 / 2,400,000,000 ≈ 0.1249 m), roughly the width of a hand.
Why is 5GHz WiFi range shorter than 2.4GHz at the same power?
5GHz's shorter wavelength (~6 cm vs ~12.5 cm) attenuates faster over distance and is blocked more easily by walls and obstacles, a direct physical consequence of its higher frequency — see the WiFi Coverage calculator for the quantified path-loss relationship.
Does this conversion apply to all types of waves?
The wavelength formula (λ = c/f) applies specifically to electromagnetic waves traveling at the speed of light (radio, microwave, light). Sound waves travel much slower and use a different speed constant, so this calculator is intended for RF/wireless use cases.