IES file generator

Build an approximate photometric IES (IESNA LM-63) file for a luminaire: set the power, luminous flux and size, pick a light-distribution curve and the spot symmetry, preview it in a live 3D room and download the .ies file.

Luminaire

W
lm
мм
мм
мм
Beam angle
°
Beam width for cosine curves; ignored for Batwing / Uniform.
0E avg, lx
0E min, lx
0E max, lx
0U₀ (min/avg)
LMB — rotate · wheel — zoom · RMB — pan · drag an item · Ctrl+C/V — copy · Del — delete
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Lighting calc

Drawing stays on — draw walls one after another; exit with Esc or the button. Shift — straight walls (multiples of 45°). Drag nodes — walls follow and snap. Click a wall/node to select, Del to delete. Drag a box over empty space to select many walls, then Del.
Parameters ×
Important

This produces an approximate photometric file from a parametric model — useful for quick studies, mock-ups and testing. It is not a measured laboratory (goniophotometer) file and should not be used for certification or as a real product datasheet.