600 sq ft
20×30 room:
20×30 room:
how many lights?
A 20×30 ft room is 600 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 15 to 48 fixtures at 800 lumens each.
Pick the room type below for the full layout, spacing and ceiling plan.
A 20×30 room, by what it is used for
| Room type | Target | Total lumens | Fixtures | Grid | Spacing |
|---|---|---|---|---|---|
| Kitchen | 300 lx | 29,433 lm | 40 | 8 × 5 | 3.8′ × 4′ |
| Living room | 150 lx | 16,857 lm | 24 | 6 × 4 | 5′ × 5′ |
| Bedroom | 100 lx | 11,238 lm | 15 | 5 × 3 | 6′ × 6.7′ |
| Bathroom | 200 lx | 22,477 lm | 28 | 7 × 4 | 4.3′ × 5′ |
| Home office | 300 lx | 30,150 lm | 40 | 8 × 5 | 3.8′ × 4′ |
| Dining room | 150 lx | 15,075 lm | 20 | 5 × 4 | 6′ × 5′ |
| Garage | 150 lx | 16,857 lm | 24 | 6 × 4 | 5′ × 5′ |
| Hallway | 100 lx | 11,238 lm | 15 | 5 × 3 | 6′ × 6.7′ |
| Laundry | 200 lx | 19,622 lm | 24 | 6 × 4 | 5′ × 5′ |
| Basement | 150 lx | 16,857 lm | 24 | 6 × 4 | 5′ × 5′ |
| Workshop | 400 lx | 39,244 lm | 48 | 8 × 6 | 3.8′ × 3.3′ |
| Nursery | 100 lx | 11,238 lm | 15 | 5 × 3 | 6′ × 6.7′ |
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 20x30 room?
It depends what the room is for. A 20×30 ft (600 sq ft) living room needs about 24 fixtures at 800 lm; the same footprint as a kitchen needs about 40, because a kitchen is lit to roughly double the level. Pick the room type for the real answer.
How many square feet is a 20x30 room?
600 square feet, or 55.7 square metres.