Let’s find out what the difference between voltage, wattage and lumens is.

First, we need to define these terms in a simple manner –


This is merely a measure of the output of the electrical current. Higher voltage indicates greater flow of current.

Why is it important?

Knowing what voltage your lighting fixture operates at is crucial. Every country has a specified voltage at which electricity is supplied. For example, in US it is 120 V. If your lighting fixture needs a voltage lower than this, then make sure to get the proper mechanisms in place to ensure that it gets a lower voltage. If you directly plug it in, the lighting fixture will get damaged. Also, if the voltage is low you will not get the proper illumination.


This measures the energy use rather than the output of the light.

Why is it important?

Wattage is also used to understand how bright your light will be. A 100 W bulb is going to be brighter than a 60 W bulb. However, LED bulbs make it hard to solely rely on wattage to understand how bright the illumination is going to be. Make sure you know how many watts the cord can handle. Never exceed that number for safety reasons. 


This is the unit of brightness or illumination. Therefore, high lumens indicate brighter bulb.

Why is it important?

Lumens tells you how much illumination is possible with that particular light fixture. If you are planning on buying dim lights, you need to know the lumens.

lighting voltage wattage lumens

Voltage, Wattage and Lumens – Comparison

You must have guessed by now that voltage, wattage and lumens affect the intensity of the brightness of the light. That is the similarity between these three terms.

  • The difference is in what they measure. Voltage measures the output of current, wattage measures energy use, and lumens measures illumination. However, they equally impact your purchase decision.
  • Before you set out to purchase a lighting fixture, ensure that you have all the necessary information about the voltage at your home, what kind of illumination are you looking for (bright or dim) and the kind of bulb you are going to purchase.
  • Some manufactures now use Watt and Lumens interchangeably. This is especially true in the case of LED bulbs that are brighter than other types of bulbs.

Make sure you read the product specifications clearly before you buy the lighting fixture for your space. There are a lot of other information on the label that is deemed important. This includes life expectancy of the light, the color of the light – warm or cool, and estimated energy cost per year.

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