Light Output for Room Lighting
Use illuminance target wey you choose find number of light fittings.
Your numbers
Number of light fittings
Lumen-method estimate, no be lighting simulation. Glare, daylight, task position and electrical design need separate review.
Compare scenarios
You fit keep up to three snapshots for this tab. Loading one go replace the present inputs.
Formula
Use N = ceil(AE/(Φum)). A na area for m², E na di illuminance wey you choose for lux, Φ na lumens per fixture, and u and m na utilization and maintenance factors. ceil dey round up to whole fixtures.
Use illuminance target wey you choose find number of light fittings.
Example wey show the calculation
- Area wey need covering (m²)
- 20
- Illuminance target wey you choose (lux)
- 300
- Lumens wey one light fitting produce
- 1000
- Factor for light utilization
- 0.6
- Factor for light maintenance
- 0.8
- Number of light fittings
- 13
- Total installed lumens wey you need
- 12,500 lm
Where e fit work and limits
Lumen-method estimate, no be lighting simulation. Glare, daylight, task position and electrical design need separate review.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: f83778c8399f · Example don get check: