Same amount of light

Choose a CFL that provides the same amount of light (measured in lumens) as the regular incandescent bulb it is replacing.

4 to 1 rule of thumb

A CFL consumes approximately one fourth of the energy of an incandescent bulb to provide the same amount of light. Therefore, simply divide the wattage of the incandescent bulb you are replacing by four to find the wattage of the CFL you need.

Lower wattage, same amount of light!