Terahertz to Hertz Converter
Common Conversions
| THz | Hz |
|---|---|
| 0.1 | 100000000000 |
| 0.5 | 500000000000 |
| 1 | 1000000000000 |
| 2 | 2000000000000 |
| 5 | 5000000000000 |
| 10 | 10000000000000 |
| 25 | 25000000000000 |
| 50 | 50000000000000 |
| 100 | 100000000000000 |
| 1000 | 1000000000000000 |
Why this conversion matters in chemistry
Mid-infrared vibrational spectroscopy hits this regularly. A 30 THz fingerprint band at 1000 cm⁻¹ converts to 3.0 × 10¹³ Hz — the frequency that corresponds to 124 meV per vibrational quantum on a Planck-relation calculation. The 10¹² Hz per THz is just the SI tera prefix written as one number. What this is, really: the step between THz time-domain spectrometer output (where photon-frequency is the natural axis) and the wavenumber form FTIR spectra and standard vibrational-mode tables use.
Formula
Hz = THz × 10¹²
Worked Examples
1 THz = 10¹² Hz
The conversion anchor — about the lower edge of the far-infrared region.
10 THz = 10¹³ Hz
Mid-infrared — the fingerprint vibrational region.
0.3 THz = 3 × 10¹¹ Hz
Boundary between microwave and THz regions.
Frequently Asked Questions
How do I convert THz to Hz?
Multiply by 10¹². The tera prefix means one trillion, so 1 THz = 1,000,000,000,000 Hz.
What does THz spectroscopy probe in chemistry?
Low-frequency vibrations: hydrogen-bond network modes, crystal lattice vibrations, intermolecular stretching. The technique is especially useful for polymorph identification in pharmaceutical solids and for hydration-shell dynamics in solution.
How does THz relate to wavenumbers?
1 THz corresponds to about 33.36 cm⁻¹ via c = νλ. The far-infrared region (10–400 cm⁻¹) and the THz range (0.3–10 THz) overlap and probe the same low-energy molecular motions.