Lumens Calculator
Determine the lighting requirements for your room to ensure proper visibility and ambiance.
Target: 20 Foot-Candles
Required Brightness
3,600 lm
~ 4-5 Standard LED Bulbs (800lm each)
Based on: 180 sq ft x 20 foot-candles
How Many Lumens Do I Need?
The amount of light required depends on the room's size and its purpose. We use foot-candles (fc) or lux to measure illumination intensity.
- Living Room / Bedroom: 10-20 fc (100-200 lux) - Relaxed atmosphere.
- Bathroom / Kitchen: 30-40 fc (300-400 lux) - Brighter for tasks.
- Workspace / Garage: 50+ fc (500+ lux) - Very bright for detailed work.
Formula: Lumens = Room Area (sq ft) × Foot-Candles required.
(In Metric mode: Lumens = Room Area (m²) × Lux required)