Basic Bulb Calculator

Save money by swapping traditional incandescent and halogen light bulbs for LEDs. This simple light bulb calculator shows how much money you could save using more energy-efficient light bulbs.

Calculate your annual savings now! 💰🐸

Bulb TypePower UsageCost per HourCost per Year (single bulb)Cost per Year (household average)Average Cost of BulbLife Span (Hours)
LED10W0.00274.4989.84550,000
CFL20W0.00558.98179.6928,000
Halogen70W0.019131.45628.9112,000
Incandescent100W0.027444.92898.4512,000
* cost per year (single bulb) is based on a single bulb being used for 4.5 hours per day
* cost per year (household average) is based on the UK average household - which is 2 hours per day with an average of 45 bulbs for a single household.