Free Online IES TM-33 Viewer (No Signup)
Also opens DWG, DXF, STEP, IGES, IFC, SKP, STL, OBJ, GLB, FBX, 3DM and other 3D/CAD files. Drop any file on the viewer.
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Also from Innerscene: Circadian Lab, a free lighting calculator for room illuminance, melanopic EML, and glare.
What Is an IES TM-33 File?
IES TM-33 is the XML format for luminaire optical data, published as TM-33-18 and revised as TM-33-23; the Italian standard UNI 11733 uses the same structure. It carries what an .ies file carries (an intensity for each horizontal and vertical angle of the goniometer) and more: several emitters, radiant and photon intensity beside the luminous one, spectra and colour data. The files are usually saved with the .xml extension.
The viewer recognises a TM-33 document by its root element, reads the intensity table, sums emitters measured on one grid, and draws the photometric web: each direction at a distance proportional to its intensity, coloured from blue (dim) to white (peak), with the C0-C180 and C90-C270 polar curves and the luminaire outline from the stated dimensions. Radiant and photon tables, common in horticultural and UV reports, are drawn the same way and labelled in W/sr or µmol/s/sr.
The status line gives the lumens, peak intensity, beam and field angles, power, colour temperature and maker. Open in IES Viewer takes the table on to the IES Viewer as an LM-63 file, for the polar plot and the isofootcandle plan.
Who Uses IES TM-33 Files?
Photometric test laboratories and the manufacturers they test for, horticultural lighting makers submitting photon data to the DLC, lighting designers who receive TM-33 files from manufacturers, and specifiers checking a report’s numbers without lighting software.
Common Use Cases
- See a TM-33 light distribution in 3D without lighting software
- Read lumens, peak candela, beam angle and power from a TM-33 report
- Check a horticultural photon-intensity table before a DLC submission
- Turn a TM-33 file into an IES LM-63 file through the IES Viewer
- Export the photometric web as GLB, OBJ, STL or USDZ
Features
3D Photometric Web
The intensity distribution drawn as a solid you can orbit, each direction at a distance proportional to its intensity.
TM-33-18, TM-33-23 and UNI 11733
Every schema in circulation, recognised by its root element whatever the file is called.
Several Emitters
Emitters measured on one angle grid are summed into the luminaire’s distribution.
Photon and Radiant Data
Horticultural and UV tables drawn the same way and labelled in µmol/s/sr or W/sr.
Polar Curves in 3D
The C0-C180 and C90-C270 curves drawn as lines through the web.
Numbers on the Status Line
Lumens, peak intensity, beam and field angle, power, colour temperature and maker.
Open in the IES Viewer
One click hands the table to the IES Viewer as an LM-63 file, for the polar plot and isofootcandle plan.
Export the Web
Save the photometric web as GLB, OBJ, STL, USDZ, a self-contained HTML page or an image.
Nothing Is Uploaded
The file is read entirely in your browser. No account, no upload, no copy on a server.
Share and Embed
Send a link that opens the 3D web in any browser, or drop the viewer into your own page with one iframe.
Compatibility & Format Notes
Read: TM-33-18 (root IESTM33), TM-33-23 (root IESTM33-22) and ATLA S001 / UNI 11733 documents (root LuminaireOpticalData); luminous, radiant and photon intensity tables, scaled by their multiplier; Type A, B and C goniometers; every symmetry, including tables measured over the C90-C270 half, which are mirrored to the full circle. Several emitters on one angle grid are summed; otherwise the first emitter with a table is drawn.
Files: recognised by their content, whatever the extension (.xml, .tm33 or none); other XML files open as text. A TM-33 file with no intensity table gets a notice saying so. Spectra are noted on the status line and not drawn. LM-63 .ies files open on the IES 3D viewer page and EULUMDAT files on the LDT viewer page.
Embed on Your Website
Add this viewer to your own site with a single line of HTML. Click Embed in the toolbar to generate an embed code, or use the snippet below with your own file URL.
Your Files Stay on Your Computer
Your IES TM-33 files are parsed entirely in your browser. Nothing is uploaded, stored, or shared unless you explicitly click the Share button. Shared files are hosted for 90 days then deleted.
Frequently Asked Questions
▶How is a TM-33 file different from an IES file?
Both carry a luminaire’s intensity at each angle. An .ies file (LM-63) is a fixed text layout for one luminous table; TM-33 is XML and adds several emitters, radiant and photon intensity, spectra and colour data. The viewer draws the intensity table of either one the same way.
▶My TM-33 file is called .xml. Does it open?
Yes. Most TM-33 files are saved as .xml. The viewer reads the root element, so a TM-33 document opens as a photometric web and any other XML file opens as text.
▶Can I convert TM-33 to IES?
Yes. Click Open in IES Viewer: the table goes over as an IES LM-63-2002 file, which the IES Viewer can show and download.
▶Does it read horticultural photon data?
Yes. A file with only a photon (or radiant) intensity table is drawn the same way, and the status line gives the photon flux, peak intensity and wavelength range in µmol/s and µmol/s/sr.
▶Is this TM-33 viewer really free?
Yes, completely free. No signup, no watermarks, no file size limits on the viewer (the optional share-link feature has a 100 MB upload cap). Built by Innerscene as a tool for architects, engineers, and designers.
▶Are my files uploaded to a server?
No. All parsing, rendering, and conversion runs in your browser: nothing is uploaded, stored, or transmitted by default. The Share button is the only feature that uploads a file, and only when you explicitly click it.
▶Can I convert to another format?
Yes. The photometric web is a 3D mesh, so the Export menu offers GLB, OBJ, STL, PLY, USDZ, 3MF, VRML, STEP, DXF and 3DM, a self-contained HTML page, PDF and PNG or JPG images of the view.
▶Can I embed this viewer on my own site?
Yes. Click Embed in the toolbar to generate a one-line <iframe> snippet you can paste into any HTML page. You can choose whether the embed shows the viewer’s toolbar.