How many lumens is equivalent to a 100 watt light bulb?

The current 100-watt incandescent bulb is the equivalent of about 1600 lumens.

According to new U.S. energy efficiency requirements, beginning January 1, 2012, all across the nation, companies will no longer be able to sell or manufacture 100 watt light bulbs. You will no longer be able to find or buy 100 watt bulbs. Instead, the highest you will find is 72 watts. In addition to this change, you will now find that light bulbs will no longer be categorized by wattage, but rather by lumens. A 72 watt bulb will now be referred to as a “1,500 lumens bulb" or a “2,600 lumens bulb.” Here's a quick reference guide to see all bulb conversions.

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