Unit Conversion & Measurement

Lux & Lumens Converter

Translate illuminance and luminous flux using area so lighting plans stay on spec.

Enter the area and either a lux target or available lumens to calculate the other value. The calculator shows both lux and lumens baselines to keep fixture counts and compliance reports aligned. Use it for retail, warehouse, or workplace lighting scenarios where coverage and brightness matter.

Your Input and Get Results

Lux = lumens / area. Use the same area baseline for each comparison.

Results

Converted output -

Enter values and calculate to see the output.

Converted output
-
Target output
Lux baseline
-
Illuminance
Lumens baseline
-
Luminous flux

Lighting split chart

Converted share Baseline share

Results table

Metric Value
Enter values and calculate to see the output.

Precautionary guidance

  • Confirm the area uses the same measurement basis.
  • Match fixture height assumptions with design notes.
  • Document reflectance or daylight adjustments.
  • Recalculate when the area or layout changes.
  • Keep lux targets aligned with code requirements.
  • Share the baseline values with lighting teams.

Use the baseline lux and lumens to align lighting specifications.

How to use this calculator

Enter Area

Start with the floor or work area in square meters. Keep the area consistent with your lighting plan.

Select Mode

Choose lux to lumens when you have a target illuminance, or lumens to lux when you have fixture output.

Export Results

Share the output with design teams so fixture counts and compliance targets stay aligned.