Sell vs rent analysis on current primary residence - need help!

[Clancy C]

We are moving out of state. I'm trying to analyze if we would be better off selling our current residence or if we should keep it and rent it out. I suspect selling now would be the best choice, given the market and lack of capital gains (under threshold).

Not sure how to calculate this easily – I've tried using the BP rental property calculator, but my numbers are all off since we've already lived in the house 8 years. I'm not sure how to adjust for that.

How should I calculate this? 

Thanks