Recessed Lighting Calculator
Calculate optimal spacing and placement for recessed lighting fixtures on your ceiling
Calculate Recessed Lighting Layout
The longest dimension of your ceiling
The shorter dimension of your ceiling
Fixtures across the room width
Fixtures along the room length
Add additional fixtures between the main grid points
Lighting Layout Results
Main Grid Fixtures
Layout Summary
Formulas used: Outer offset = Dimension ÷ (2 × Number of fixtures); Spacing = Dimension ÷ Number of fixtures
Room dimensions: 0.00 × 0.00 m
Layout Guidelines
Example Calculation
Living Room Layout
Room dimensions: 5m × 3m (16.4ft × 9.8ft)
Desired layout: 2 columns × 3 rows
Total fixtures: 6 recessed lights
Calculations
Column spacing = 3m ÷ 2 = 1.5m
Row spacing = 5m ÷ 3 = 1.67m
Column offset = 1.5m ÷ 2 = 0.75m
Row offset = 1.67m ÷ 2 = 0.83m
Recessed Lighting Tips
Ceiling Height
Standard 8-9ft ceilings work best
Higher ceilings may need larger fixtures
Fixture Size
4-6 inch diameter for most rooms
Larger rooms can use 6-8 inch fixtures
Beam Angle
40-60° for general lighting
Narrower beams for accent lighting
Quick Reference
Space fixtures 4-6 feet apart for even lighting
Keep fixtures at least 3 feet from walls
Use dimmer switches for flexibility
Consider LED bulbs for energy efficiency
Plan for adequate insulation clearance
Understanding Recessed Lighting Layout
What is Recessed Lighting?
Recessed lighting consists of light fixtures installed inside a ceiling, creating a sleek, streamlined look. The fixtures are "recessed" into hollow openings in the ceiling, so they appear to shine light from within the ceiling itself.
Benefits of Proper Layout
- •Even light distribution across the room
- •Eliminates dark spots and shadows
- •Creates ambiance and visual appeal
- •Maximizes ceiling height appearance
Layout Formulas
Outer Row Offset = Length ÷ (2 × Rows)
Outer Column Offset = Width ÷ (2 × Columns)
Row Spacing = Length ÷ Rows
Column Spacing = Width ÷ Columns
Planning Considerations
- Room function: Task vs. ambient lighting needs
- Ceiling height: Affects fixture size and spacing
- Furniture layout: Consider permanent fixtures
- Electrical access: Plan for wiring and switches