Wavelength of FM Radio at 100 MHz
An FM radio signal at 100 MHz (100,000,000 Hz) has a wavelength of exactly 3 metres.
How to use this tool
- Enter wavelength (λ) and frequency (f) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your frequency and the full breakdown beneath it.
Find the wavelength of a typical FM radio station broadcasting at 100 MHz.
Frequently asked questions
- What wavelength is visible light?
- Visible light spans roughly 380 nm (violet) to 700 nm (red). Green is around 550 nm with frequency ~545 THz.
- Why is the speed of light fixed?
- In vacuum, c is a fundamental constant (≈ 3 × 10⁸ m/s) by definition since 1983. In other media light slows down by a factor of the refractive index.