Recessed Lighting Calculator

Use the recessed lighting calculator on this page to calculate the placement and spacing for general (ambient) 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.

Select a layout:

Measure the area and enter it here:

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

Calculate the distances:

Print the Layout Plan:

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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.

Would your friends or followers find this useful? Share it using the buttons below!