Inputs
Results
Average illuminance
--
lux
Reading count
--
Minimum reading
--
lux
Maximum reading
--
lux
Data completeness
--
Measurement plane
--
Calculation details
- Average illuminance
- -- lux
- Reading count
- --
- Minimum reading
- -- lux
- Maximum reading
- -- lux
- Data completeness
- --
- Measurement plane
- --
Important notes
- An average does not describe uniformity, glare, vertical illuminance, or measurement quality.
- Measurement metadata must accompany the number; this calculator does not declare compliance.
Formulas
- \(\displaystyle E_{\mathrm{avg}} = \frac{\sum E_i}{n}\)
- Retain the measurement plane, grid method, date, and instrument record with the average.
Calculate average measured illuminance while retaining the measurement plane and sample count.
Average Lux Calculator is a planning aid. Keep the target source, product data, measurement method, and project assumptions with the result. Confirm compliance, installation, certification, and safety decisions with the responsible professional.