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LED Savings Calculator

See how much you save per year by replacing incandescent, halogen or CFL bulbs with LEDs, and the payback time.

Old bulb watts

LED watts

Number of bulbs

Hours per day

Electricity price ($/kWh)

LED price each ($)

How to use it

A 60 W incandescent is matched by roughly an 8-10 W LED (800 lumens).
Enter how many bulbs and hours per day.

How it works

Savings = (old W − new W) × bulbs × hours × 365 ÷ 1,000 × price. LEDs also last 15,000-25,000 hours vs about 1,000 for incandescents.

FAQ

How much do LED bulbs save?

Replacing a 60 W bulb with a 9 W LED used 4 hours a day saves about 74 kWh - roughly $12-13 a year per bulb at 17¢/kWh.

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