Formula and method
Wavelength λ = wave speed/frequency. Period T = 1/frequency.
Worked example
At 100 MHz and the vacuum light speed of 299,792,458 m/s, wavelength is 2.99792458 m.
Wavelength Calculator
Calculate wavelength and period from frequency and propagation speed, with explicit units for waves in different media.
Printed from Calxy · https://www.calxy.net/other/wavelength-calculator
Wavelength2.9979 m
m/s
1e-12 – 1000000000000000
Hz
1e-12 – 1000000000000000
Wavelength
2.9979 m
- Frequency period0.0000 s
- Wavelength in nanometers2,997,924,580.0000 nm
The default speed is light in vacuum. Use the appropriate phase speed for sound or waves in a material; dispersion can make speed frequency-dependent.
How this was calculated
Wavelength λ = propagation speed v ÷ frequency f.
Period T = 1/f.
Frequently asked questions
Can I use this for sound?
Yes, if you enter the appropriate sound speed in the medium. The default is vacuum light speed and is not appropriate for sound.
Last updated . Results are estimates for informational purposes only.