Energy ↔ frequency ↔ wavelength ↔ wavenumber converter
Convert between eV↔J, THz, nm, cm⁻¹ and rad/s with batch mode, spectroscopy (Raman), and CSV/printable export.
Energy ↔ frequency ↔ wavelength ↔ wavenumber converter
Convert between eV, J, THz, nm, cm⁻¹ and rad/s with batch mode, spectroscopy (Raman), and CSV export.
Main input
Results
Results (vacuum)
—
Energy
—
Frequency
—
Wavelength
—
Wavenumber
—
Angular frequency
—
Results in medium (λ/n)
—
EM spectrum bar
Enter a value to locate the wavelength in the spectrum.
List input
Batch / Table
Paste values separated by lines, semicolons, or spaces. Empty lines are ignored.
Batch results
| Original | E (eV) | E (J) | f (THz) | λ (nm) | ṽ (cm⁻¹) |
|---|
Typical units
Typical units (cm⁻¹, nm, THz, eV)
eV
—
THz
—
nm
—
cm⁻¹
—
Raman shift
Raman shift
Scattered λ
—
f
—
E
—
ṽ
—
Line spectrum
Line spectrum
Visualization
| Input | λ (nm) | ṽ (cm⁻¹) | THz | eV |
|---|
Step by step
SI conversions and applied formulas are shown.
Example validations (approx.)
Constants used
- h = 6.62607015×10⁻³⁴ J·s
- c = 299792458 m/s
- e = 1.602176634×10⁻¹⁹ C (J/eV)
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