Beam Geometry

Mounting Height Footprint Calculator

Compare geometric beam footprints at multiple mounting heights.

Lighting calculator Beam Geometry Updated August 26, 2026

Inputs

Mounting heights

Add one row for each relevant space, item, zone, document, or measurement set.

Row 1
Row 2

Results

Smallest footprint diameter -- m
Largest footprint diameter -- m
Last-to-first height ratio -- ratio
Footprint comparison --
Calculation details
Footprint comparison
--
Smallest footprint diameter
-- m
Largest footprint diameter
-- m
Last-to-first height ratio
-- ratio
Important notes
  • High mounting applications may need point-by-point photometric simulation.
  • Australian standards may inform planning boundaries; this comparison is not an automatic compliance declaration.

Formulas

  • \(\displaystyle D_i = 2H_i\tan(\theta/2)\)
  • Footprints are returned in the entered height order for comparison.

Compare geometric beam footprints at multiple mounting heights.

Mounting Height Footprint 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.