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Hz to cm⁻¹ Calculator
Convert frequency (Hz) to wavenumber (cm⁻¹) for spectroscopy, infrared analysis, and molecular physics. Supports bidirectional conversion with multiple frequency units.
Spectroscopy Calculator:
Convert between frequency and wavenumber units using the speed of light. Essential for IR spectroscopy, Raman spectroscopy, and quantum mechanics calculations.
Hz to cm⁻¹ Converter
Mode
EM Region
Infrared
Wavelength: ~300 nm - 1 mm
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Conversion Results
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Hz to cm⁻¹ Conversion
Converting frequency (Hz) to wavenumber (cm⁻¹) is a fundamental calculation in spectroscopy and molecular physics. Wavenumber represents the number of wave cycles per unit distance and is widely used in infrared (IR) and Raman spectroscopy.
The Conversion Formula
The relationship between frequency and wavenumber is derived from the wave equation:
Conversion Formula
ν̃ = ν / c
Where ν̃ is wavenumber (cm⁻¹), ν is frequency (Hz), and c is the speed of light (2.998 × 10¹⁰ cm/s)
Practical Formula
cm⁻¹ = Hz ÷ (2.998 × 10¹⁰)
cm⁻¹ = THz × 33.356
Hz to cm⁻¹ Reference Table
| Frequency | Wavenumber (cm⁻¹) | Wavelength | EM Region |
|---|---|---|---|
| 1 THz | 33.36 | 300 µm | Far IR |
| 3 THz | 100.07 | 100 µm | Far IR |
| 10 THz | 333.56 | 30 µm | Mid IR |
| 30 THz | 1000.7 | 10 µm | Mid IR |
| 100 THz | 3335.6 | 3 µm | Near IR |
| 300 THz | 10007 | 1 µm | Near IR |
| 500 THz | 16678 | 600 nm | Visible |
| 1000 THz | 33356 | 300 nm | UV |