Lumens for
900 square feet
23,399lm ambient A 900 sq ft room (83.6 m²) needs roughly 23,399 lumens as a living room, rising to about 41,806 lumens as a kitchen and 42,952 lumens as a home office.
A lumen total is a budget, not a layout. It says nothing about whether the floor is even, which is the part the contour sheets on the footprint pages settle.
SOURCE·IES lumen-method recommendations·published recommendations, quoted as ranges·REVIEWED JUL 2026
Schedule · by use900 square feet, commissioned twelve ways
| Used as a | Target | Total lumens | 800 lm fixtures |
|---|---|---|---|
| Kitchen | 300 lx | 41,806 lm | 54 |
| Living room | 150 lx | 23,399 lm | 30 |
| Bedroom | 100 lx | 15,599 lm | 20 |
| Bathroom | 200 lx | 31,199 lm | 42 |
| Home office | 300 lx | 42,952 lm | 56 |
| Dining room | 150 lx | 21,476 lm | 30 |
| Garage | 150 lx | 23,399 lm | 30 |
| Hallway | 100 lx | 15,599 lm | 20 |
| Laundry | 200 lx | 27,871 lm | 36 |
| Basement | 150 lx | 23,399 lm | 30 |
| Workshop | 400 lx | 55,742 lm | 72 |
| Nursery | 100 lx | 15,599 lm | 20 |
Fixture counts assume a roughly square room at an 8 ft ceiling; a long, narrow 900 sq ft room has a lower room index and needs more.
SOURCE·Computed from the lumen method·no dataset, every figure reproducible with a calculator·REVIEWED JUL 2026
AdjacentTake it to a real footprint
Square footage is where a lighting question starts and never where it ends: two 900 sq ft rooms with different proportions have different room indices and different counts. Pick the actual dimensions on the footprint index and the sheet comes with contours drawn.
