Hi Ryan,
No, it is not in volts.  It's also not something that one could tell from an image per se, but assuming you used ChimeraX to calculate Coulombic electrostatic potential, the units are kcal/(mol·e) at 298 K, as mentioned on this page:

<https://rbvi.ucsf.edu/chimerax/docs/user/commands/coulombic.html>

If you used APBS, DelPhi, or some other method, you should check the documentation for that method to verify what units they produce.

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Jun 26, 2023, at 12:08 PM, Ryan Gardner via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
>
> Hello,
>
> I just want to verify that the electrostatic potential is measured in volts (V). Is this correct?
>
> Here's an example of my analysis:
> <image.png>
>
> Sorry to be a bother!
>
> -Ryan