Frequency ↔ Wavelength Converter
Convert between frequency and wavelength instantly. The Frequency ↔ Wavelength Converter helps you quickly determine the wavelength of a signal based on its frequency, or the frequency from a given wavelength. This calculator is useful for RF engineering, antenna design, microwave systems, and wireless communication planning.
Frequency to Wavelength
Wavelength to Frequency
Result
Enter a value and convert.
Frequency and Wavelength Formula
lambda = c / f
f = c / lambda
Where c is the speed of light in free space, approximately 299,792,458 m/s.
Frequency - Wavelength Conversion Basics
Frequency and wavelength are related through the speed of light.
lambda = c / f
Where:
- lambda = wavelength (meters)
- c = speed of light ≈
3 × 10^8m/s - f = frequency (Hz)
Frequency to Wavelength Formula
To calculate wavelength from frequency:
lambda = 300 / f(MHz)
Example:
If frequency = 100 MHz
lambda = 300 / 100 = 3 meters
Wavelength to Frequency Formula
To calculate frequency from wavelength:
f = c / lambda
Example:
If wavelength = 0.125 m
f = (3 × 10^8) / 0.125 = 2.4 GHz
Common Frequency and Wavelength Examples
| Frequency | Wavelength | Example Application |
|---|---|---|
| 1 kHz | 300 km | Longwave radio |
| 1 MHz | 300 m | AM radio |
| 100 MHz | 3 m | FM radio |
| 900 MHz | 0.33 m | Cellular networks |
| 2.4 GHz | 0.125 m | WiFi / Bluetooth |
| 28 GHz | 10.7 mm | 5G mmWave |