Lighting a 14 × 28 ft bathroom
Total light needed
13,720lumens
392 ft² × 35 foot-candles
| Room area | 392ft² |
|---|---|
| Target light levelIES guidance for a bathroom | 35foot-candles |
| Total lumens | 13,720lm |
| Colour temperatureadd vanity lights at face height | 3000–4000K |
| Bulbs (800 lm each) | 18bulbs |
| Recessed cans (4 ft spacing)549 lm each | 25fixtures |
- Room
- bathroom
- Width
- 14 ft
- Length
- 28 ft
Where 13,720 lumens comes from
Lighting is specified in foot-candles — lumens landing on each square foot of the surface you care about. A bathroom is worked to 35 foot-candles. Across 392 ft² that is 13,720 lumens in total.
Split it up
One fixture putting out 13,720 lumens and 25 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.
Colour temperature
3000–4000K suits this room. Warmer light reads as relaxed and is what you want where people wind down; cooler light keeps edges and colours crisp, which matters where there is work to do.
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 13,720 lm fixture and 25 smaller ones add up the same but look completely different.
Nearby sizes
- Lighting a 14 × 28 ft bedroom
- Lighting a 14 × 28 ft dining room
- Lighting a 14 × 28 ft kitchen
- Lighting a 14 × 28 ft home office
- Lighting a 12 × 28 ft bathroom
- Lighting a 16 × 28 ft bathroom
- Lighting a 10 × 28 ft bathroom
- Lighting a 18 × 28 ft bathroom
- Lighting a 14 × 26 ft bathroom
- Lighting a 14 × 24 ft bathroom