Utilisation Factor Impact Calculator
Show how a low and high utilisation factor assumption changes required initial lumens.
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Latest in Room Targets
Room Reflectance Assumption Tool
Summarise room index and a weighted reflectance profile from ceiling, wall, floor, and geometry assumptions.
Maintained Lumen Requirement Calculator
Convert a maintained illuminance target into maintained and initial lumen requirements.
Maintained vs Initial Lux Calculator
Compare initial and maintained illuminance using a supplied maintenance factor.
Maintenance Factor Calculator
Estimate a compound maintenance factor from lumen, luminaire, room, and cleaning assumptions.
Room Target Lux Selector
Select an editable planning range for a room and task without presenting it as universal compliance guidance.
Task Plane Lux Calculator
Record a task-plane illuminance target with its orientation, height, and room area.