Lighting a 24 × 28 ft living room
Total light needed
10,080lumens
672 ft² × 15 foot-candles
| Room area | 672ft² |
|---|---|
| Target light levelIES guidance for a living room | 15foot-candles |
| Total lumens | 10,080lm |
| Colour temperaturewarm, relaxed | 2700K |
| Bulbs (800 lm each) | 13bulbs |
| Recessed cans (4 ft spacing)240 lm each | 42fixtures |
- Room
- living room
- Width
- 24 ft
- Length
- 28 ft
Where 10,080 lumens comes from
Lighting is specified in foot-candles — lumens landing on each square foot of the surface you care about. A living room is worked to 15 foot-candles. Across 672 ft² that is 10,080 lumens in total.
Split it up
One fixture putting out 10,080 lumens and 42 fixtures adding up to the same number light a room very differently. A single source throws hard shadows and glare; several spread the light and make the room feel larger. Aim for layers — ambient, task, and something low for the evening.
Colour temperature
2700K suits this room. Warmer light reads as relaxed and is what you want where people wind down; cooler light keeps edges and colours crisp, which matters where there is work to do.
Notes
- Foot-candles are lumens per square foot at the work surface. Ceilings above 9 ft, dark walls or dark flooring all eat light — add roughly 10% per extra foot of ceiling height.
- Spread the total across several fixtures rather than one bright source. One 10,080 lm fixture and 42 smaller ones add up the same but look completely different.