Home › Frequency wavelength
Frequency wavelength converter
Frequency and wavelength are two ways of saying the same thing, joined by the wave speed.
Why one number gives you the other
A wave’s speed, frequency and wavelength are tied together by a single relationship: speed = frequency × wavelength. Fix the speed and the other two are simply two ways of describing the same wave. Double the frequency and the wavelength halves.
wavelength = speed ÷ frequency
Some waves to place it against
| Wave | Frequency | Wavelength |
|---|---|---|
| Mains hum (Europe) | 50 Hz | 5,996 km |
| AM radio | 1 MHz | 300 m |
| FM radio | 100 MHz | 3 m |
| Wi-Fi | 2.4 GHz | 12.5 cm |
| Microwave oven | 2.45 GHz | 12.2 cm |
| Red light | 430 THz | 700 nm |
| Violet light | 750 THz | 400 nm |
The speed is not always c. Light slows in glass or water, and sound travels at about 343 m/s in air rather than 300 million. Pick the right speed above or the answer will be right arithmetic about the wrong wave.
Every converter on the site
LengthWeight and MassVolumeAreaSpeedTimePressureEnergyPowerData StorageAngleTemperatureFuel economyForceDensityTorqueAll 76 ›
Also free on Toolsitz: Unit Converter — no login.