You can see average damage, exp, assist and so on but in game there doesn’t seem to be a way to see how much credits a tank earns on average.
Are there any external sites or any mods that provide this info?

Also how exactly does calculating credit earnings work? I know some of the factors are damage dealt, assist (only highest assist type counts like with marks?), prem tank, prem account and a few more but I’d be curious to know how the entire formula looks like.