Lighting Design Calculator

Room

Length ft

Width ft

Ceiling ft

Room type

Target footcandles auto-fills from room type · editable

Fixture

Fixture type

Coefficient of utilization auto by ceiling ht

No CU table for this fixture — enter CU manually.

Light loss factor

Derived values

Room area—

Required lumens—

Lumens per fixture (effective)—

Watts per fixture (effective)—

Total connected load—

Fixture quantity

—

Calculated FC

—

Lighting power density

— W/sf

Suggested layout

Spacing L: — Spacing W: — End offset = ½ spacing

Power density vs. IECC 2021 allowance (reference)

0.0 W/sf allowance: —

Allowances shown are approximate IECC 2021 space-by-space LPD values for reference only — verify against the adopted code edition and any local amendments for the project jurisdiction. Lumen-method results are a uniform-layout estimate; confirm with a point-by-point calc (AGi32 / Visual) before release.