Planning a lighting project? Use our Recessed Lighting Calculator to easily determine the ideal number of recessed lights and their optimal spacing for any room. Achieve perfect illumination with our simple tool for your home renovation or new build. Calculate lumens, wattage, and layout for a perfectly lit space.
Formula:
Recessed Lighting Calculation Formula
1. Room Area (sq ft) = Room Length (ft) × Room Width (ft)
2. Target Total Lumens Needed = Room Area (sq ft) × Recommended Lumens per Sq Ft (based on Room Type)
3. Recommended Number of Lights = Ceiling(Target Total Lumens Needed / Lumens per Fixture)
4. Approximate Spacing Between Lights (ft) = Ceiling Height (ft) / 2
5. Approximate Distance from Wall (ft) = Approximate Spacing Between Lights (ft) / 2
Variables Explained:
Room Length: The length of the room in feet.Room Width: The width of the room in feet.Ceiling Height: The height from the floor to the ceiling in feet.Recommended Lumens per Sq Ft: A target brightness level based on the room's function (e.g., Kitchens require more lumens than bedrooms).Lumens per Fixture: The light output of a single recessed light bulb or fixture.