⚠️ Safety Note: Lighting fixture installation involves electrical wiring and should be performed by a licensed electrician, especially for new circuits or recessed fixtures. Always turn off power at the breaker before any electrical work.
How Many Lumens Does Your Room Need?
Lumens measure the total amount of visible light emitted by a source. Unlike watts, which measure energy consumption, lumens tell you how bright a light actually is. Modern LED bulbs produce far more lumens per watt than older incandescent bulbs, which is why a 10-watt LED can replace a 60-watt incandescent while providing the same 800 lumens of brightness.
Different rooms require vastly different lighting levels. A kitchen or bathroom where you perform detailed tasks needs 70-80 lumens per square foot, while a bedroom used mainly for relaxation only needs 20-30 lumens per square foot. This calculator uses industry-standard recommendations from the Illuminating Engineering Society (IES) to determine the right brightness for your space.
Keep in mind that these are general guidelines. Rooms with dark walls and flooring absorb more light and may need 10-20% more lumens. Rooms with light-colored surfaces reflect light efficiently and may need less. Task lighting (under-cabinet lights, desk lamps) supplements general room lighting for specific work areas without requiring higher overall lumen levels.
Recommended Lumens by Room Type
| Room Type | Lumens / Sq Ft |
|---|---|
| Kitchen | 70 – 80 |
| Bathroom | 70 – 80 |
| Living Room | 20 – 30 |
| Bedroom | 20 – 30 |
| Dining Room | 30 – 40 |
| Office / Workshop | 50 – 70 |
| Garage | 50 – 70 |
| Hallway | 10 – 20 |
| Laundry Room | 70 – 80 |