How to convert nanometers to terahertz
THz = 299,792.458 ÷ nmNanometers and terahertz are inversely related: when one goes up the other goes down. Divide 299,792.458 by the value — do not multiply.
Worked examples
- 100 nanometers299,792.458 ÷ 100 = 2,997.92458 THz
- 400 nanometers299,792.458 ÷ 400 = 749.481145 THz
- 550 nanometers299,792.458 ÷ 550 = 545.0771964 THz
- 650 nanometers299,792.458 ÷ 650 = 461.2191662 THz
- 800 nanometers299,792.458 ÷ 800 = 374.7405725 THz
Nanometers to terahertz conversion table
Values are calculated by the conversion engine using the full formula and rounded to 8 significant figures.
| Nanometers (nm) | Terahertz (THz) |
|---|---|
| 1 nm | 299,792.46 THz |
| 10 nm | 29,979.246 THz |
| 100 nm | 2,997.9246 THz |
| 200 nm | 1,498.9623 THz |
| 300 nm | 999.30819 THz |
| 400 nm | 749.48114 THz |
| 450 nm | 666.20546 THz |
| 500 nm | 599.58492 THz |
| Nanometers (nm) | Terahertz (THz) |
|---|---|
| 550 nm | 545.0772 THz |
| 600 nm | 499.6541 THz |
| 650 nm | 461.21917 THz |
| 700 nm | 428.27494 THz |
| 750 nm | 399.72328 THz |
| 800 nm | 374.74057 THz |
| 1,000 nm | 299.79246 THz |
About the units
Nanometer (nm)
Optical wavelengths are given in nm: green light is about 530 nm. It is inversely related to hertz: Hz = 2.99792458×10¹⁷ ÷ value.
Terahertz (THz)
Visible light spans roughly 400–790 THz. One terahertz equals 1,000,000,000,000 hertz (Hz).
Frequently asked questions
What is the formula to convert nanometers to terahertz?
THz = 299,792.458 ÷ nm. Nanometers and terahertz are inversely related: when one goes up the other goes down. Divide 299,792.458 by the value — do not multiply.
What is 400 nanometers in terahertz?
400 nm = 749.481145 THz.
Why is this not a simple multiplication?
One unit measures the quantity directly and the other measures its inverse, so a larger value in one means a smaller value in the other. That is why the formula divides a constant by your value.
Is this nm to THz converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.