What numbers to run on single family rentals?

[Filip Grace]

I own a single family residence. It’s my first home and we will be looking to move soon. I’d love to keep it as a rental to start my real estate portfolio but am new to this and don’t know what numbers to run to evaluate this decision. Is there a formula or collection of metrics to calculate that is often used? I’m sure these are market specific to some degree but how do I learn which numbers matter most?