This simple calculator gives a quick read on the economic viability of renting out, rather than selling your house.
It divides the net operating income from renting the property by the expected sale price of the house, giving you an investment yield--like a bond yield.
If this yield, also called a "capitalization rate," is less than what long-term Treasurys are yielding (around 5.7%) you'd probably be better off selling your house.
Type in values or use sliders to calculate estimated annual income and capitalization rate.