Question 1

What is 685 nm in eV?

Accepted Answer

685 nm = 1.81 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 1.81 eV in nm?

Accepted Answer

1.81 eV = 684.9956 nm.

nm	eV
670 nm	1.8505
675 nm	1.8368
680 nm	1.8233
685	1.81
690 nm	1.7969
695 nm	1.7839
700 nm	1.7712

685 nm to eV

Formula