What are Lumens? What do They Mean? [GUIDE]

So, you have finally discovered that the watt is not a unit of light, its ‘lumen’.

No worries if you still did not make this discovery.

A lot of people like you still think that the watt is the unit of light intensity, as they have been listening to it for years that, higher the wattage, more will be the light.

Well, that’s not the case. At least, in the modern world, as technology is advancing, and energy efficiency is the new dilemma.

In order to remove all your confusions about the SI unit of light intensity, called the “Lumens”, we have compiled this complete guide.

Enough bragging about it, let’s checkout the details.


What are Lumens?

Lumens is the SI unit of light intensity. It indicates the brightness of the light. The more will be the number of lumens, the brighter will be the lightening effect. That means, a 100-lumens bulb will always be brighter than a 50-lumens bulb, regardless of all the other factors.

How Lumens is Different From Wattage?

A lot of people have this question in mind about how lumens are different from wattage. The answer is very straightforward.

Lumens indicate the brightness of the light. On the other hand, wattage indicates the power consumption of a light.

A 200W incandescent bulb might be brighter than a 100W incandescent bulb. But higher wattage doesn’t necessarily mean that it would have better performance.

For example, a 30W LED bulb is brighter than a 200W incandescent bulb. So, wattage is not a true indicator of the light intensity.

And, as lumens always indicates the brightness of light. Thus, a 200-lumens bulb will always be brighter than a 100-lumens bulb, regardless of the type of the bulb, and it’s wattage.

Therefore, you need to rely more on the lumens as compared to the wattage.

If you are interested more in lights, and electronic products, checkout Lumen Authority

Lumens Vs Watt

Since, you always have been relying on the watts throughout your life. We know that the transition can be harder. Therefore, we have compiled this complete table that shows how lumens are compared with wattage side by side.

200W Incandescent Light Bulb = 3400 Lumens

100W Incandescent Light Bulb = 1600 Lumens

75W Incandescent Light Bulb = 1100 Lumens

60W Incandescent Light Bulb = 800 Lumens

40W Incandescent Light Bulb = 440 Lumens

25W Incandescent Light Bulb = 200 Lumens

Frequently Asked Questions (FAQs)

How are Lumens Different from Watts?

Lumens and watts are two different SI units used for measuring different things. Lumens is the representative of the brightness of light. While on the other hand, wattage shows the power consumption of the light bulb. Thus, they indicate two different things.

However, people in the older times used the wattage SI unit to indicate the brightness of the light.

Do more Lumens Mean Brighter Light?

Yes, more the amount of lumens, the brighter will be the intensity of light. Lumens is the clear indicator of the brightness of the light.

Do More Wattage Mean Brighter Light?

Well, wattage is not the unit of light. Higher watts does not mean brighter light. As a 25W LED bulb can be brighter than a 100W incandescent bulb.


A lot of people get confused about different brightness technologies including the wattage and lumens. In this blogpost, we have vanished all the myths regarding different terminologies.

If you still have any question in mind, feel free to ask us in the comments section below.


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