Recessed Lighting Calculator

Placement & Spacing

Use the recessed lighting calculator on this page to calculate the placement and spacing for general lighting in a room.

Just select the layout, enter the room’s dimensions, and hit calculate.

If you’re unsure of how many lights the room needs, there’s a calculator on this page that will help.

Obviously this calculator does not cover all of the possible room shapes, or all of the possible quantities of recessed lights a room may need. However, it should give you an idea of how to apply the formula for the placement and spacing of recessed lighting.

Select a layout:

Measure the area and enter it here:

Length (in inches):
Width (in inches):

Calculate the distances:

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