Lighting a 12 × 22 ft bedroom
Total light needed
3,960lumens
264 ft² × 15 foot-candles
| Room area | 264ft² |
|---|---|
| Target light levelIES guidance for a bedroom | 15foot-candles |
| Total lumens | 3,960lm |
| Colour temperaturewarm, low glare | 2700K |
| Bulbs (800 lm each) | 5bulbs |
| Recessed cans (4 ft spacing)233 lm each | 17fixtures |
- Room
- bedroom
- Width
- 12 ft
- Length
- 22 ft
Where 3,960 lumens comes from
Lighting is specified in foot-candles — lumens landing on each square foot of the surface you care about. A bedroom is worked to 15 foot-candles. Across 264 ft² that is 3,960 lumens in total.
Split it up
One fixture putting out 3,960 lumens and 17 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 3,960 lm fixture and 17 smaller ones add up the same but look completely different.
Nearby sizes
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- Lighting a 12 × 22 ft bathroom
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