Frequency–Wavelength–Wavenumber Converter
Calculated in vacuum (c = 299,792,458 m/s). Enter any field and the others will update automatically.
Tip: Supports decimals and scientific notation (e.g., 3e2). Units auto-convert when changed.
Radio
~1 Hz – 3 GHz
~3×10⁸ – 10 cm
Microwave
3 GHz – 300 GHz
10 cm – 1 mm
Infrared
300 GHz – 400 THz
1 mm – 750 nm
Visible
400 – 750 THz
750 – 400 nm
Ultraviolet
750 THz – 30 PHz
400 – 10 nm
X-ray
30 PHz – 30 EHz
10 nm – 0.01 nm
Gamma Ray
>30 EHz
<0.01 nm
Electromagnetic spectrum: frequency and wavelength (in vacuum). Ranges are approximate; transitions are gradual.