28×28 room:
how many lights?
20–64fixtures A 28×28 ft room is 784 square feet. How many lights it needs depends entirely on what happens in it — a kitchen is lit to roughly twice the level of a bedroom, so the same footprint ranges from 20 to 64 fixtures at 800 lumens each.
The footprint does not decide the count. The target illuminance does, and that is set by what the room is for.
SOURCE·IES lumen-method recommendations·published recommendations, quoted as ranges·REVIEWED JUL 2026
Plan above: the 28×28 ft footprint laid out as a living room at 150 lux, with iso-lux contours at 32 / 21 / 11 lux.
Schedule · by useOne 28×28 footprint, twelve commissioning targets
| Room type | Target | Total lumens | Fixtures | Grid | Spacing |
|---|---|---|---|---|---|
| Kitchen | 300 lx | 37,089 lm | 49 | 7 × 7 | 4′ × 4′ |
| Living room | 150 lx | 21,010 lm | 25 | 5 × 5 | 5.6′ × 5.6′ |
| Bedroom | 100 lx | 14,007 lm | 20 | 4 × 5 | 7′ × 5.6′ |
| Bathroom | 200 lx | 28,014 lm | 36 | 6 × 6 | 4.7′ × 4.7′ |
| Home office | 300 lx | 37,849 lm | 49 | 7 × 7 | 4′ × 4′ |
| Dining room | 150 lx | 18,925 lm | 25 | 5 × 5 | 5.6′ × 5.6′ |
| Garage | 150 lx | 21,010 lm | 25 | 5 × 5 | 5.6′ × 5.6′ |
| Hallway | 100 lx | 14,007 lm | 20 | 4 × 5 | 7′ × 5.6′ |
| Laundry | 200 lx | 24,726 lm | 30 | 5 × 6 | 5.6′ × 4.7′ |
| Basement | 150 lx | 21,010 lm | 25 | 5 × 5 | 5.6′ × 5.6′ |
| Workshop | 400 lx | 49,452 lm | 64 | 8 × 8 | 3.5′ × 3.5′ |
| Nursery | 100 lx | 14,007 lm | 20 | 4 × 5 | 7′ × 5.6′ |
At 800 lumens per fixture and an 8 ft ceiling. Open a room type for other fitting outputs, other ceilings and its own contour sheet.
SOURCE·IES lumen-method recommendations·published recommendations, quoted as ranges·REVIEWED JUL 2026
QueriesWhat this footprint is usually asked
How many recessed lights for a 28x28 room?
It depends what the room is for. A 28×28 ft (784 sq ft) living room needs about 25 fixtures at 800 lm; the same footprint as a kitchen needs about 49, because a kitchen is lit to roughly double the level. Pick the room type for the real answer.
How many square feet is a 28x28 room?
784 square feet, or 72.8 square metres.
