Lighting Layout & Spacing Calculator
Design a code-compliant lighting plan with precise fixture spacing.
1Room Dimensions
Room Area
300.00 sq ft
2Lighting Specs
-
Min: 300
Fixtures Needed
-Lights
-
Grid Layout-
Avg Spacing-
Brightness Target-
3Layout Preview
15'
20'
Placement Detail
1'1012"
3'9"
2'
4'
Popular lighting Configurations
Lighting Spacing Formula
S = Lroom / Nfixtures
Distance to wall = S / 2
Distance to wall = S / 2
Lighting Power Density
While NEC focuses on safety, energy codes (like IECC or Title 24) limit Lighting Power Density (Watts per sq ft). LED fixtures help meet these stringent efficiency requirements.
Frequently Asked Questions
How far apart should recessed lights be?
A common rule of thumb is to divide the ceiling height by 2. For an 8ft ceiling, space lights about 4ft apart.
How far should lights be from the wall?
For even illumination, place the first row of lights at a distance equal to half the spacing between lights. If lights are 6ft apart, place them 3ft from the wall.
How many lumens do I need for a room?
Living rooms typically need 20-30 lumens per sq ft. Kitchens and workspaces need more, typically 30-50 lumens per sq ft.