How to convert electronvolts to nanometers
nm = 1,239.841984 ÷ eVElectronvolts and nanometers are inversely related: when one goes up the other goes down. Divide 1,239.841984 by the value — do not multiply.
Worked examples
- 1 electronvolt (photon energy)1,239.841984 ÷ 1 = 1,239.841984 nm
- 5 electronvolts1,239.841984 ÷ 5 = 247.9683969 nm
- 10 electronvolts1,239.841984 ÷ 10 = 123.9841984 nm
- 20 electronvolts1,239.841984 ÷ 20 = 61.99209922 nm
- 100 electronvolts1,239.841984 ÷ 100 = 12.39841984 nm
Electronvolts to nanometers conversion table
Values are calculated by the conversion engine using the full formula and rounded to 8 significant figures.
| Electronvolts (eV) | Nanometers (nm) |
|---|---|
| 0.1 eV | 12,398.42 nm |
| 0.25 eV | 4,959.3679 nm |
| 0.5 eV | 2,479.684 nm |
| 1 eV | 1,239.842 nm |
| 2 eV | 619.92099 nm |
| 3 eV | 413.28066 nm |
| 4 eV | 309.9605 nm |
| 5 eV | 247.9684 nm |
| 6 eV | 206.64033 nm |
| 7 eV | 177.12028 nm |
| 8 eV | 154.98025 nm |
| 9 eV | 137.76022 nm |
| 10 eV | 123.9842 nm |
| Electronvolts (eV) | Nanometers (nm) |
|---|---|
| 12 eV | 103.32017 nm |
| 15 eV | 82.656132 nm |
| 20 eV | 61.992099 nm |
| 25 eV | 49.593679 nm |
| 30 eV | 41.328066 nm |
| 40 eV | 30.99605 nm |
| 50 eV | 24.79684 nm |
| 75 eV | 16.531226 nm |
| 100 eV | 12.39842 nm |
| 250 eV | 4.9593679 nm |
| 500 eV | 2.479684 nm |
| 1,000 eV | 1.239842 nm |
About the units
Electronvolt (eV)
Photon energy E = hf; 1 eV corresponds to about 241.8 THz or 1,239.84 nm. One electronvolt equals 241,798,924,200,000 hertz (Hz).
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.
Frequently asked questions
What is the formula to convert electronvolts to nanometers?
nm = 1,239.841984 ÷ eV. Electronvolts and nanometers are inversely related: when one goes up the other goes down. Divide 1,239.841984 by the value — do not multiply.
What is 5 electronvolts in nanometers?
5 eV = 247.9683969 nm.
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 eV to nm 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.