Question 1

What is 640 eV in nm?

Accepted Answer

640 eV = 1.9373 nm. Use the converter on this page to convert to other photon energy units instantly.

Question 2

How do you convert eV to nm?

Accepted Answer

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

Question 3

What is 1.9373 nm in eV?

Accepted Answer

1.9373 nm = 639.9845 eV.

eV	nm
625 eV	1.9837
630 eV	1.968
635 eV	1.9525
640	1.9373
645 eV	1.9222
650 eV	1.9074
655 eV	1.8929

640 eV to nm

Formula