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

How many lumens for a 16 × 20 ft bedroom?

Total light needed
4,800lumens
320 ft² × 15 foot-candles
bedroom · 16×20 ft16 ft20 ft4,800 lumens total · about 6 fixtures · 2700K
Room area320ft²
Target light levelIES guidance for a bedroom15foot-candles
Total lumens4,800lm
Colour temperaturewarm, low glare2700K
Bulbs (800 lm each)6bulbs
Recessed cans (4 ft spacing)240 lm each20fixtures

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 4,800 lm fixture and 20 smaller ones add up the same but look completely different.

Where 4,800 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 320 ft² that is 4,800 lumens in total.

Split it up

One fixture putting out 4,800 lumens and 20 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.

Color temperature

2700K suits this room. Warmer light reads as relaxed and is what you want where people wind down; cooler light keeps edges and colors crisp, which matters where there is work to do.

Nearby sizes

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