Watts to lumens calculator

Electric power in watts (W) to luminous flux in lumens (lm) calculator and how to calculate.

Enter the power in watts, luminous efficacy in lumens per watt and press the Calculate button to get the luminous flux in lumens:

Enter power in watts: W
Enter light source:
Or enter luminous efficacy in lumens per watt: lm/W
   
Luminous flux result in lumens: lm

* the predefined luminous efficacy values are typical / average values.

 

Lumens to watts calculator ►

Watts to lumens calculation

Energy saving lamps have high luminous efficacy (more lumens per watt).

The luminous flux ΦV in lumens (lm) is equal to the power P in watts (W), times the luminous efficacy η in lumens per watt (lm/W):

ΦV(lm) = P(W) × η(lm/W)

Watts to lumens calculation formula

The luminous flux ΦV in lumens (lm) is equal to the power P in watts (W), times the luminous efficacy η in lumens per watt (lm/W):

ΦV(lm) = P(W) × η(lm/W)

So

lumens = watts × (lumens per watt)

or

lm = W × (lm/W)

Example 1

What is the luminous flux of a lamp that has power consumption of 30 watts and luminous efficacy of 25 lumens per watt?

ΦV = 30 W × 25 lm/W = 750 lm

Example 2

What is the luminous flux of a lamp that has power consumption of 50 watts and luminous efficacy of 25 lumens per watt?

ΦV = 50 W × 25 lm/W = 1250 lm

Example 3

What is the luminous flux of a lamp that has power consumption of 70 watts and luminous efficacy of 15 lumens per watt?

ΦV = 70 W × 25 lm/W = 1750 lm

Example 4

What is the luminous flux of a lamp that has power consumption of 100 watts and luminous efficacy of 25 lumens per watt?

ΦV = 100 W × 25 lm/W = 2500 lm

Example 5

What is the luminous flux of a lamp that has power consumption of 200 watts and luminous efficacy of 25 lumens per watt?

ΦV = 200 W × 25 lm/W = 5000 lm

 

 

Watts to lumens calculation ►

 


See also

Features of Watts to lumens Calculator

Our Watts to lumens Calculator allows the users to Calculate Watts to lumens . Some of the prominent features of this utility are explained below.

No Registration

You don’t need to go through any registration process to use the Watts to lumens Calculator. Using this utility, users to Calculate Watts to lumens as many times as you want for free.

Fast conversion

This Watts to lumens Calculator offers users the fastest Calculate. Once the user enters the  Watts to lumens values ​​in the input field and clicks the Calculate button, the utility will start the conversion process and return the results immediately.

Saves Time and Effort

The manual procedure of Calculator Watts to lumens isn’t an easy task. You must spend a lot of time and effort to complete this task. The Watts to lumens Calculator allows you to complete the same task immediately. You will not be asked to follow manual procedures, as its automated algorithms will do the work for you.

Accuracy

Despite investing time and effort in manual Calculation, you might not be able to get your hands on accurate results. Not everyone is good at solving math problems, even if you think you're a pro, there's still a good chance you'll get in accurate results. This situation can be smartly handled with the help of a Watts to lumens Calculator. You will be provided with 100% accurate results by this online tool.

Compatibility

The online Watts to lumens converter perfectly works on all operating systems. Whether you have a Mac, iOS, Android, Windows, or Linux device, you can easily use this online Tool without facing any hassle.

100% Free

You don't need to go through any registration process to use this Watts to lumens Calculator. You can use this utility for free and do unlimited Watts to lumens Calculate without any limitations.

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