Compare Brightness:

How many lumens do you need? More lumens = more light Lumens 1600 1100 800 450 = Incandescent LED Fluorescent Halogen 100 W 22 W 23 W 72 W 75 W 18 W 18 W 53 W 60 W 12 W 13 W 43 W 40 W 9 W 11 W 29 W Output & Wattages based on most common products available for each medium screw-based light bulb. Actual output may vary by product.

Lumens The amount of light that comes from a bulb, which has commonly been measured in watts. The more lumens, the brighter the bulb.

Wattage A measurement of the power delivered to a component of an electric circuit (allowing a one-ampere current to flow through the component under the pressure of 1 volt.)

Bulb Shape Bulb shapes are denoted with a letter, which describes the shape, and a number, which indicates the size. The number indicates the diameter of the light bulb at its widest part in eighths of an inch.

Base The part of the bulb that connects to the fixture and its power supply. Bulb bases are denoted with the letter E, and a number which indicates the diameter of the bulb base at its widest part in millimeters.

Voltage Indicates how much voltage a bulb can accept via the fixture it's installed in.

Light Color Temperature The relative color from a light source, measured on the Kelvin temperature scale. Warm light is lower in color temperature (2700-3000 K) and cool, blue light is higher (5000 K).

Average Rated Life The average amount time that a bulb is expected to last.