Free Recessed Lighting Calculator
Calculate Recessed Lights for Perfect Room Lighting
Standard: 8, 9, or 10 ft
📋 Lighting Layout Guide
- Spacing: 0.75 × Ceiling Height
- Wall distance: Half the spacing
- 1 light per 20-25 sq ft
❓ Recessed Lighting FAQ
How many recessed lights do I need?
Round(L÷S) × Round(W÷S). S = Height×0.75. 12’×12′, 9′ ceiling: ~4 lights.
How far apart should recessed lights be?
0.75 × ceiling height. 8ft: ~6ft. 9ft: ~7ft. 10ft: ~7.5ft.
How many recessed lights per sq ft?
1 per 20-25 sq ft general. 144 sq ft room needs 6-8 lights.
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