Lux Level Calculator · Lighting design tool · EN 12464
Lamp parameters
W
lm / fixture · auto = W × 96
° full angle
0.1–1.0 reflectance
0.1–1.0 depreciation
Floor plan import optional
No floor plan loaded
Step 1 — Set scale: Draw a reference line on a known dimension (e.g. a wall), enter the real-world length, then click Apply Scale.
Step 2 — Trace room: Click points around the room boundary. Double-click (or click the first point) to close the polygon. The room dimensions will update automatically.
Step 2 — Trace room: Click points around the room boundary. Double-click (or click the first point) to close the polygon. The room dimensions will update automatically.
Mode:
Ref length:
100%
Click two points on a known dimension to set the scale
Room dimensions
Using traced room shape — calculations follow the actual floor plan outline, not a rectangle
m
m
m
m (0 = floor)
Target illuminance
EN 12464
%
Fixtures required
—
units in grid
Average illuminance
—
lux at work plane
Centre-point lux
—
lux at room centre
Centre-beam intensity
—
lux directly below fixture
Mounting height
—
m (ceiling − work plane)
—
Fixture wattage summary
Floor plan — lux heatmap
Fixtures auto-placed in a symmetric grid. Use edit tools to adjust positions — lux recalculates live.
Edit:
New fixture:
W
Grid:
×
Click grid to add fixture · Move to drag · Remove to delete
Side view — beam geometry
