What is the Wavelength & Frequency Calculator?
Every wave obeys speed = frequency × wavelength. For light and radio waves the speed is c = 299,792,458 m/s; for sound in air about 343 m/s. Enter a frequency or wavelength (with units) to get the other, plus the photon energy (for electromagnetic waves) and which part of the spectrum it belongs to.
How to use the Wavelength & Frequency Calculator
- Choose light/radio or sound (or a custom speed).
- Enter frequency or wavelength with its unit.
- Read the converted values.
Examples
- FM radio 100 MHz → 3 m
- Wi-Fi 2.4 GHz → 12.5 cm
- Green light 530 nm → 566 THz
- Middle A 440 Hz sound → 78 cm
This Wavelength & Frequency Calculator is 100% free, needs no signup and runs privately in your browser – on phone, tablet or computer.
Last updated: · By NodifyTech