Work out the connected load and the number of luminaires a space needs before you draw anything. Enter the room, pick the application, and the calculator returns the luminous flux required, the module count and the resulting power density.
Targets follow common maintained-illuminance ranges for each space type, not a code minimum.
Calculation assumptions
0.60 / 0.80 suit a suspended direct/indirect system in a clean interior at 2.7–3.0 m mounting height. Lower the utilisation factor for very high ceilings.
Enter the room size to see the result.
| Luminous flux required | (target lux × floor area) ÷ (utilisation factor × maintenance factor) |
| Module count | Required flux ÷ flux per module, rounded up to the next whole fixture |
| Connected load | Module count × rated wattage per module |
| Module flux | Measured values from our own IES files: 5,650 lm at 40 W, 5,450 lm at 60 W, 11,200 lm at 80 W |
This is a load and quantity estimate, not a photometric calculation. Uniformity, glare and wall-washing need a point-by-point run against the actual layout — that is what the planner does.
Need the actual layout, not just the load?
Enter the room in the planner and it returns buildable modular geometries with a luminaire schedule, connected load, weight and IES-based illuminance — then exports as a drawing and a parts list.