Lumens Per Square Foot Calculator

Enter the total number of lumens and the total area of a room into the calculator to determine the lumens per square foot.

Lumens Per Square Foot Formula

LPSF = TL / (L*W)

  • Where LPSF is the lumens per square foot
  • TL is the total number of lumens
  • L is the length of the room
  • W is the width of the room

Lumens Definition

A lumen is a unit of measure that describes a luminous flux or in other words the light emitted per second.

Lumens Per Square Foot Example

How to calculate lumens per square foot?

  1. First, determine the total number of lumens.

    Calculate the total number of lumens produced by the light sources of the room.

  2. Next, determine the width.

    Measure the width of the room in feet.

  3. Next, determine the length.

    Measure the length of the room in feet.

  4. Finally, calculate the lumens per square foot.

    Calculate the LPSF using the equation above.

FAQ

What is a lumen?

A lumen is a unit of measure of the amount of luminous flux.

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