Question 1

What is 391 nm in eV?

Accepted Answer

391 nm = 3.171 eV. Use the converter on this page to convert to other photon energy units instantly.

Question 2

How do you convert nm to eV?

Accepted Answer

Formula: E(eV) = 1239.84 ÷ λ(nm) · f(THz) = E(eV) × 241.799 · E = hc/λ = hf. Multiply your nm value by the appropriate factor to get eV, or use the interactive converter above.

Question 3

What is 3.171 eV in nm?

Accepted Answer

3.171 eV = 390.994 nm.

nm	eV
376 nm	3.2975
381 nm	3.2542
386 nm	3.212
391	3.171
396 nm	3.1309
401 nm	3.0919
406 nm	3.0538

391 nm to eV

Formula