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Calcimator

Shelter Capacity Calculator

Calculate emergency shelter capacity from floor area, per-person space standards, and resource needs.

Inputs

%
%

Results

Max shelter capacity

58

Usable area (sq ft)3,500
Standard spots52
ADA-accessible spots6
Cots needed58
Restrooms / port-a-potties2
Daily water (gal)174
Total water (gal)522
Total meals needed522
How to Use This Calculator
  1. Enter Total Floor Area (sq ft) of the shelter facility.
  2. Set Sq Ft per Person — SPHERE standard is 3.5 m2 (37.7 sq ft) per person minimum.
  3. Enter Usable Area (%) to exclude walls, equipment, and circulation.
  4. Set ADA-Accessible % to ensure compliance with accessibility requirements.
  5. Review Max Shelter Capacity and ADA-accessible spaces to plan shelter activation.
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