How many lumens for a 18 × 26 ft dining room?
Total light needed
9,360lumens
468 ft² × 20 foot-candles
| Room area | 468ft² |
|---|---|
| Target light levelIES guidance for a dining room | 20foot-candles |
| Total lumens | 9,360lm |
| Colour temperaturedimmable, centred on the table | 2700K |
| Bulbs (800 lm each) | 12bulbs |
| Recessed cans (4 ft spacing)312 lm each | 30fixtures |
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 30 smaller ones add up the same but look completely different.
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 dining room is worked to 20 foot-candles. Across 468 ft² that is 9,360 lumens in total.
Split it up
One fixture putting out 9,360 lumens and 30 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.
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