How many lumens for a 18 × 26 ft garage?
Total light needed
23,400lumens
468 ft² × 50 foot-candles
| Room area | 468ft² |
|---|---|
| Target light levelIES guidance for a garage | 50foot-candles |
| Total lumens | 23,400lm |
| Colour temperaturecool white for detail work | 4000–5000K |
| Bulbs (800 lm each) | 30bulbs |
| Recessed cans (4 ft spacing)780 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 23,400 lm fixture and 30 smaller ones add up the same but look completely different.
Where 23,400 lumens comes from
Lighting is specified in foot-candles — lumens landing on each square foot of the surface you care about. A garage is worked to 50 foot-candles. Across 468 ft² that is 23,400 lumens in total.
Split it up
One fixture putting out 23,400 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
4000–5000K 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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