What is a Lumen? What’s the Difference Between it and a Watt?

Lighting—it’s all about lumens. But what are lumens, exactly? And how do you understand what are lumens in light bulbs and light fixtures? 

lumens is now THE way to find out how bright a lighted bulb or integrated LED lighting fixture is. And if you want a fixture with bright, luminous , it's the key to choosing the perfect piece for your lighting .

The lumens definition is: “a unit of luminous flux in the International System of Units, that is equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions.”

In short...

Lumens equals brightness!

And watts do not. Not that watts are bad, but they measure energy use, not light output. With new, energy-efficient LED technology, we can no longer rely upon wattage to indicate how bright a bulb is . See how to measure lumens below:


Use the chart above to determine exactly how many lumens are in a watt and vice versa. This should provide you with a good understanding of how bright 450 lumens is vs. a fixture with 5800 lumens

If you still aren’t sure what you need, our Design Team experts can help you determine how many lumens are needed for your total space or specific task. Whether you have a full lighting plan or just need one lamp, we can help find the perfect fixture that suits your needs. To speak with a member of our Design Team, please give us a call at  920014332

 or email us at info@ultralightstores.com