Probably you will find it very easy to pick an incandescent lamp by watt rating, however, the lumens rating of led bulb is not simple. It’s different from watt rating, which make you confused to find out which bulb to buy. Today we will tell you how to distinguish Watt from lumens.

When you buy an incandescent lamp, you’re probably focus on watts, the indication of how bright the bulb will be. The higher the watts, the brighter the bulb. On the contrary, The rule of LED bulb is not the case.

LED uses less energy and thus has a lower wattage, which is meaningless to measure the brightness of the LED bulb through the Watts. As comparable brightness, the LED bulb to a 60W incandescent is only 10 to 12 watts.

But don’t bother doing the math, convert with watt is not precise enough. To solve this problem, manufacturers began to use lumens , to mark the brightness accurately.

Lumens is not the exclusive concept of LEDs. Lumens has been rated as a measure of lamp flux for decades. 2011, the US Federal Trade Commission requires the energy-saving lamps, incandescent and LED bulbs to be used lumens to indicate the brightness.

“Although watt measurements are familiar to consumers and have been featured on the front of light bulb packages for decades, watts are a measurement of energy use, not brightness,” the FTC said in a press release. Reliance on watt measurements will make consumers confused.

You will find the unit “lm” on the package, which stands for “Lumen”. The higher the lumen rating, the brighter the lamp.

How to replace traditional lamp to LEDs?

The easiest way is using lumens to convert. Now matter to replace incandescent lamps, CFL, high pressure mercury lamp or compact fluorescents.


blog3- slt-tech form picture

(a table)

Assuming you need to replace 100W 1600lm incandescent lamps, you can pick an 1600lm rated LED bulb to get the same brightness, mostly refers to 16-20W LEDs.

If use SLT-Tech lamps to replace the incandescent bulbs 100W 1600lm, 12W is enough. SLT-Tech 12W is 1600lm.

As you see, the total of watt you need base on each lumen rating. Because of energy saving, LED brands have to offer more lumens for less wattage. When you pick a LED bulb, find the bulbs with the lumens you need, and get the lowest watt among them. You just need to focus on LM on the package to get the same brightness as your old lamp.