How the Lumens Calculator works
Lumens equal square metres multiplied by lux, with a maintenance allowance for aging and dirt.
How to use this tool
- Collect accurate values for room area, target lux, maintenance allowance.
- Enter measurements in the displayed units and select the choices that match this project.
- Select Calculate / Generate, then compare the outputs with the stated Lumens Calculator method.
- Apply the result only after checking product specifications and real site conditions.
Example calculation or use case
For a worked Lumens Calculator example, use Room area = 20 m², Target lux = 200 lux, Maintenance allowance = 15 %. The tool then applies this method: Lumens equal square metres multiplied by lux, with a maintenance allowance for aging and dirt.