900 sq ft
30×30 room:
30×30 room:
how many lights?
A 30×30 ft room is 900 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 72 fixtures at 800 lumens each.
Pick the room type below for the full layout, spacing and ceiling plan.
A 30×30 room, by what it is used for
| Room type | Target | Total lumens | Fixtures | Grid | Spacing |
|---|---|---|---|---|---|
| Kitchen | 300 lx | 41,900 lm | 54 | 9 × 6 | 3.3′ × 5′ |
| Living room | 150 lx | 23,575 lm | 30 | 5 × 6 | 6′ × 5′ |
| Bedroom | 100 lx | 15,717 lm | 20 | 4 × 5 | 7.5′ × 6′ |
| Bathroom | 200 lx | 31,433 lm | 42 | 6 × 7 | 5′ × 4.3′ |
| Home office | 300 lx | 42,807 lm | 56 | 7 × 8 | 4.3′ × 3.8′ |
| Dining room | 150 lx | 21,403 lm | 30 | 5 × 6 | 6′ × 5′ |
| Garage | 150 lx | 23,575 lm | 30 | 5 × 6 | 6′ × 5′ |
| Hallway | 100 lx | 15,717 lm | 20 | 4 × 5 | 7.5′ × 6′ |
| Laundry | 200 lx | 27,934 lm | 36 | 6 × 6 | 5′ × 5′ |
| Basement | 150 lx | 23,575 lm | 30 | 5 × 6 | 6′ × 5′ |
| Workshop | 400 lx | 55,867 lm | 72 | 9 × 8 | 3.3′ × 3.8′ |
| Nursery | 100 lx | 15,717 lm | 20 | 4 × 5 | 7.5′ × 6′ |
At 800 lumens per fixture and an 8 ft ceiling. Click a room type for other fixture sizes and ceiling heights.
Questions
How many recessed lights for a 30x30 room?
It depends what the room is for. A 30×30 ft (900 sq ft) living room needs about 30 fixtures at 800 lm; the same footprint as a kitchen needs about 54, because a kitchen is lit to roughly double the level. Pick the room type for the real answer.
How many square feet is a 30x30 room?
900 square feet, or 83.6 square metres.