THE PRACTICAL GUIDE · NORMANDIN SYSTEMS
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IES Lighting Guidelines makes it easier to look up lighting application reference entries without scanning a long reference list manually. The tool searches a bundled table by industry, application, foot-candle range, and lighting description. Start with a specific name, code, or distinctive term, then compare the returned entry with the exact field your application expects. Distinguish task-surface illuminance from lamp output, and consider the measurement plane and application details. A lookup is most useful when you record both the displayed value and the convention behind it, since similar-looking labels can represent different kinds of information. The bundled table is a starting reference and is not guaranteed to reflect the latest IES standard. Confirm design criteria in the current IES Lighting Library. Use the example below as a starting point and narrow the search if several entries look plausible. Before reusing a result, check that the selected entry matches the intended context rather than choosing only the first familiar-looking label.
Guide updated October 13, 2026
How to use this tool
- Enter a name, code, or keyword relevant to lighting application reference entries. Use a distinctive term to avoid an unnecessarily broad result list.
- Review the returned entries and their labels. Distinguish task-surface illuminance from lamp output, and consider the measurement plane and application details.
- Compare the selected entry with the original source or the requirements of the receiving application. Similar names do not always mean interchangeable values.
- Copy the required field together with its context. The bundled table is a starting reference and is not guaranteed to reflect the latest IES standard. Confirm design criteria in the current IES Lighting Library.
SEE IT IN PRACTICE
A worked example
office
Matching office-related application rows, with their listed foot-candle ranges
Use the row’s exact application description to understand what the displayed range refers to; there is no universal light level for every office task.
Use the application context
A lighting reference row describes a particular task or space, not every room with a similar name. Read the activity and measurement context before comparing a meter value with the listed range. The actual design can require attention to glare, uniformity, surface reflectance, and occupant needs. Use this search to locate relevant concepts, then confirm criteria in the applicable current standard.
Foot-candles versus lux
A foot-candle describes illuminance in lumens per square foot; lux uses lumens per square metre. One foot-candle is approximately 10.764 lux. When comparing a listed range with a meter, convert the unit and match the measurement surface. A lamp’s lumen output is a different quantity and cannot be compared directly with either number without knowing how that light reaches the surface.
When this tool is useful
- Find a lighting application entry with a clear reference convention.
- Compare reference terminology by comparing the available fields.
- Prepare questions for a lighting review using a reproducible search term.
Tips for a better result
- The bundled table is a starting reference and is not guaranteed to reflect the latest IES standard. Confirm design criteria in the current IES Lighting Library.
- Distinguish task-surface illuminance from lamp output, and consider the measurement plane and application details.
- Keep the original label alongside the selected code or reference while preparing an import. This makes mismatches easier to investigate later.
Frequently asked questions
Does one illuminance number fully specify a lighting design?
No. The relevant application, task surface, uniformity, glare, and other criteria can matter. Use the current applicable IES material and project requirements when developing a design.
Why can several results appear relevant?
A short search term can match different names, identifiers, or descriptions. Read the full entry and the meaning of the requested field before selecting a value; similarity in spelling is not a reliable equivalence test.
How should I check the value before using it?
Match the result to the receiving system’s expected convention. Distinguish task-surface illuminance from lamp output, and consider the measurement plane and application details. For decisions that depend on current authoritative data, verify against the relevant primary reference rather than assuming a bundled list updates automatically.
What happens to the information I enter?
The utility processes your input in this browser. Some tools retain field values in browser storage or the URL; avoid entering secrets in shareable fields. Page and asset requests still go to the hosting provider. Read the privacy and offline-use notes for details.