KelvinPlanHow much light each room needs, and what colour it should be.

Lighting a 24 × 26 ft bedroom

Total light needed
9,360lumens
624 ft² × 15 foot-candles
Room area624ft²
Target light levelIES guidance for a bedroom15foot-candles
Total lumens9,360lm
Colour temperaturewarm, low glare2700K
Bulbs (800 lm each)12bulbs
Recessed cans (4 ft spacing)240 lm each39fixtures
Room
bedroom
Width
24 ft
Length
26 ft

Where 9,360 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 624 ft² that is 9,360 lumens in total.

Split it up

One fixture putting out 9,360 lumens and 39 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 9,360 lm fixture and 39 smaller ones add up the same but look completely different.

Nearby sizes