LED savings calculator
Use this LED savings calculator to figure out how much money you can save by installing LED house lights to replace incandescent lights.
The calculator assumes an average incandescent bulb lifetime of 1,000 hours and an average LED house light lifetime of 50,000 hours. You can change this if you wish based on the advertised lifetime hours of either the original or replacement bulb, or both.
For compact fluorescent (CFL) lights, see my CFL savings calculator.