Real photometric calculation from the fixture's IES file — point by point, not a rule of thumb. Set your room, read the light level, get a printable report.
fc
auto
Leave on «auto» to let the tool reach your target.
0,90
pi
pi
pi
pi
pi
Workplane = the height where light is measured (desk, bench, floor for a warehouse). Suspension = how far the fixture hangs below the ceiling.
80 %
50 %
20 %
Typical: white ceiling 80 %, light walls 50 %, concrete floor 20 %. Darker surfaces return less light — the calculation accounts for it.
Power density follows: W/ft² or W/m².
—fc
Average
—fixtures
Layout
—W/pi²
Power density
Drag to orbit · Ctrl + scroll to zoom
Light level on the workplane
— · darkestbrightest · —
Your browser cannot show the 3D view (WebGL unavailable). The numbers and the report still work.
