CFL Calculator...Looking to help the environment and save money by converting from incandescent light bulbs to compact fluorescent bulbs (CFLs)? One question everyone has when considering the switch is how much money they will save by switching, since CFLs cost more up front. It's easy to get bogged down in the calculations - kilowatt hours, hours of use, watt differentials... that's where CFL Calculator comes in!

Simply type in your average light bulb usage time per day, the cost/kilowatt hour from your utility bill, and the number of light bulbs of each type that you are replacing with CFLs - and you'll get an annual energy bill savings calculated for you instantly.