Question 1

What is 257 nm in eV?

Accepted Answer

257 nm = 4.8243 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 4.8243 eV in nm?

Accepted Answer

4.8243 eV = 256.9994 nm.

nm	eV
242 nm	5.1233
247 nm	5.0196
252 nm	4.92
257	4.8243
262 nm	4.7322
267 nm	4.6436
272 nm	4.5582

257 nm to eV

Formula