Spacing-to-mounting-height ratio (SHR) calculator

Compare the estimated ratio with the luminaire manufacturer limit.

Units

\mathrm{SHR} = \frac{S}{H_{m}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

\mathrm{SHR} = \frac{16}{14} \approx 1.143

Symbol	Meaning	Unit
$\mathrm{SHR}$	spacing-to-mounting-height ratio	ratio
$S$	fixture spacing	ft
$H_{m}$	mounting height above work plane	ft

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.