ProcirelConvert between frequency and wavelength for electromagnetic waves using the speed of light constant. Enter either frequency (Hz, kHz, MHz, GHz) or wavelength (m, cm, mm, µm, nm) and the calculator computes the other. Essential for RF engineering, antenna design, optical systems, and wireless communication.
λ = c ÷ f · f = c ÷ λ where c = 299,792,458 m/s
Results
How to use this calculator
Step-by-Step Instructions
1. **To find wavelength** Enter the frequency value and its unit, then click “Frequency Wavelength”.
2. **To find frequency** Enter the wavelength value and its unit, then click “Wavelength Frequency”.
3. **Select appropriate units** For radio use MHz/GHz with cm/m. For optics use THz/GHz with nm/µm.
Worked Example
WiFi operates at **2.4 GHz**λ = 299792458 ÷ 2400000000 = 0.1249m = **12.49 cm**