Lighting calculators
Choose the calculator that owns the number: lumen allowance, measured lux, fitting count, beam footprint, retrofit load, daylight contribution or maintained-light estimate.
Room Lighting Calculator Australia
Estimate fitting count, target lumens and connected load from room dimensions.
Downlight Spacing Calculator Australia
Check downlight count, beam diameter and connected load before ceiling set-out.
Lux to Lumens Calculator Australia
Convert a maintained lux target and measured area into a required lumen allowance.
Lux, daylight and lumen conversions
Convert a named task plane, combined factors, measured readings, outdoor daylight reference, delivered lumens or fitting count before layout work starts.
Lux to Lumens Calculator Australia
Convert a maintained lux target and measured area into a required lumen allowance.
Lumens to Lux Calculator Australia
Check the average lux from total lumens, assessed area, UF and MF.
Maintained Lumens Calculator Australia
Convert installed initial lumens into maintained lumens with a visible maintenance factor.
Utilisation Maintenance Factor Calculator Australia
Calculate the combined UF x MF implied by a target lux, area and installed initial lumens.
Lux Meter Average Calculator Australia
Average and summarise lux meter readings for the same assessed plane and operating condition.
Lux Before and After Calculator Australia
Compare before and after lux values on the same assessed plane against one planning target.
Lux Uniformity Ratio Calculator Australia
Report descriptive min-to-average, max-to-average and spread ratios for one lux reading set.
Daylight Factor Calculator Australia
Calculate daylight factor from indoor and outdoor lux readings, then estimate indoor daylight contribution against a target lux.
Fixture Count Calculator Australia
Convert a required lumen target into whole fittings, installed lumens and rounding overshoot.
Room quantity and set-out
Estimate room quantities, downlight centres and beam coverage while keeping height, beam angle and spacing evidence separate.
Room Lighting Calculator Australia
Estimate fitting count, target lumens and connected load from room dimensions.
Downlight Spacing Calculator Australia
Check downlight count, beam diameter and connected load before ceiling set-out.
Beam Angle Calculator Australia
Calculate beam diameter and coverage area at the selected workplane.
Beam Overlap Calculator Australia
Compare calculated beam diameter with proposed fitting or row spacing at the selected workplane.
Retrofit and load support
Compare existing load, proposed LED load, schedule rows, operating hours, dimming states and strip-driver headroom without turning the result into wiring advice.
LED Replacement Calculator Australia
Compare existing output, replacement count and load change for a retrofit lighting group.
Luminous Efficacy Calculator Australia
Calculate lumens per watt from known light output and input power for one fitting or lighting group.
Energy Savings Calculator Australia
Estimate annual lighting energy, cost change and simple payback from old and new loads.
Lighting Schedule Load Calculator Australia
Total connected load for a repeated lighting schedule row from groups, fittings and input watts.
Annual Lighting kWh Calculator Australia
Calculate annual lighting kWh from fitting count, input watts, hours per day and operating days.
Lighting Power Density Calculator Australia
Calculate connected lighting load per square metre for one room, zone, row, aisle or display group.
Dimming Range Calculator Australia
Compare full, normal and minimum dimmed load for one lighting group using scene percentages.
LED Strip Driver Calculator Australia
Estimate strip load, minimum driver rating and current from strip length and watts per metre.
Light quality selectors
Select white-light appearance after the room, task, finishes, dimming state and colour-rendering checks are known.
Workplace and warehouse estimates
Estimate maintained-lighting quantities for office desks, work areas and high-bay zones with source and measurement boundaries visible.
Workplace Lighting Calculator Australia
Estimate fittings, installed lumens, maintained lux and connected load for one Australian workplace lighting zone.
Warehouse Lighting Calculator Australia
Estimate high-bay count, nominal spacing, beam spread, maintained lux and connected load for one warehouse zone.