Question 1

What is 491 nm in eV?

Accepted Answer

491 nm = 2.5251 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 2.5251 eV in nm?

Accepted Answer

2.5251 eV = 491.0071 nm.

nm	eV
476 nm	2.6047
481 nm	2.5776
486 nm	2.5511
491	2.5251
496 nm	2.4997
501 nm	2.4747
506 nm	2.4503

491 nm to eV

Formula