Utilisation Factor Impact Calculator
Show how a low and high utilisation factor assumption changes required initial lumens.
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Spotlight Aiming Geometry Calculator
Calculate source-to-target aiming angle, throw, azimuth, and approximate beam diameter for a spotlight.
Room Reflectance Assumption Tool
Summarise room index and a weighted reflectance profile from ceiling, wall, floor, and geometry assumptions.
Lumen Depreciation Estimate
Estimate remaining lumens and depreciation from an entered lumen maintenance percentage and operating hours.
Lamp vs Luminaire Output Comparison
Compare bare lamp lumens against luminaire lumens and estimate light output ratio and system efficacy.
Ceiling Height and Volume Impact Tool
Compare room volume and mounting height above task plane when ceiling height assumptions change.
Candela and Lumens Relationship Calculator
Estimate the approximate relationship between lumens and candela from a simple beam-angle solid angle.
Beam Footprint Lumen Estimate
Estimate geometric beam footprint area and average beam lux from lumens, beam angle, and target-plane height.
48 V LED Strip Voltage Drop Calculator
Estimate voltage drop and end voltage for a 48 V LED strip circuit using explicit cable resistance and feed topology.
Three-phase Lighting Load Balance Calculator
Estimate phase currents and load imbalance from entered three-phase lighting watts.