UK commercial occupancy limit & WiFi density calculator
Model statutory maximum capacity ceilings for UK venues, detect emergency exit throughput pinch-points, and determine the optimal WiFi sensor density for automated real-time compliance monitoring.
Venue capacity calculation comparison
175 persons
Calculated as 350 m² ÷ 2 m²/person.
142 persons
Based on 1050 mm exit width (41 persons/min per 750mm unit width over 2.5 min).
Statutory Constraint Result: Under UK building and fire regulations, the lower of the two values (142 persons) governs the absolute legal limit. Operating above this threshold violates the Regulatory Reform (Fire Safety) Order 2005.
Automate your venue occupancy compliance with Purple
Turn existing enterprise WiFi into real-time footfall and capacity monitors with automated compliance logs.
UK commercial occupancy and legal capacity calculator
Determine your venue's maximum lawful headcount, emergency exit flow rate, and automated WiFi presence tracking thresholds in seconds.
1. Space Classification & Size
High-footfall customer retail space, accounting for display fixtures, aisles, and checkout lanes.
Equivalent to approx. 3767 sq ft usable space
2. Emergency Fire Exit Capacity
Calculated using the standard N-1 safety principle (assuming 1 exit blocked during emergency).
UK Approved Document B specifies 75 persons per 750mm + 1 person per 5mm additional width.
Calculation Results & Compliance Summary
Limited by Fire Exit Width
@ 2 m² per person
2 exits @ 1050 mm
For live presence & dwell telemetry
Automated WiFi & Sensor Occupancy Alert Thresholds
Automate your venue occupancy compliance with Purple WiFi
Replace manual clicker counters with real-time WiFi presence tracking, live digital signage occupancy meters, and automatic threshold breach alerts.



