Event security calculator
Find the indicative number of workers for a concert, festival, sports match, city programme or corporate event. You get the result without entering contact details.
What it is for
First estimate before an enquiry
The calculator helps quickly estimate whether an event looks like a small entrance team, medium stewarding coverage or larger event security with a coordinator. It does not replace a security plan or site inspection.
Attendance and event type
A concert, festival, sport event, conference or corporate evening each has a different rhythm of arrivals, movement and audience reactions.
Vstupy, fronty a kontroly
Number of entrances and ticket, bag or wristband checks often decide whether the gate team needs reinforcement.
Risks, alcohol and time of day
Alcohol, night operating procedures, younger audience or sensitive programme increase monitoring and reserve requirements.
Zóny, backstage a koordinace
More zones, VIP, backstage, technical facilities and parking add specific roles and often an event security lead.
By event type
Where to continue after the estimate
If you already know what type of service you need, continue to the specific page. It helps align the calculator result with the real brief.
Event security
Complete security coverage for larger productions, festivals, concerts and multi-zone venues.
OpenStewarding service
Stewards, visitor orientation, entrances, sectors, cloakrooms and operational support for the organiser.
OpenSports events
Stadiums, halls, fan sectors, VIP areas and risk moments in the sports programme.
OpenConcerts and corporate events
Local page for concerts, festivals, corporate and city events in Brno and the surrounding area.
OpenThe precise proposal is created only according to the space
For larger events, the venue map, evacuation routes, entrances, backstage regime, VIP zones, parking, alcohol presence and communication link to the organiser or on-site units need to be confirmed.
Model methodology
The estimate is not attendance divided by one number
The model separates entrances, control lanes, visitor flow across the venue, departure, monitoring, on-site leadership and reserve. The 1:250 ratio is used only as a crowd management benchmark, not as a Czech legal requirement.
The model separates arrival, movement inside the venue and departure because each phase has different requirements for entrances, queues, barriers and stewarding.
Open sourceHSE Event Safety: crowd risk assessmentRisk inputs include audience profile, venue suitability, crowd movement, crossing routes, insufficient entrances and exits and route blockages.
Open sourceHSE Event Safety: crowd monitoringMonitoring accounts for total capacity, crowd distribution, entrances, exits, queues, confined spaces and early detection of problems.
Open sourceNFPA 101: crowd manager benchmarkThe US model code uses an indicative ratio of one trained crowd manager per 250 people. In the calculator it is a control benchmark, not a Czech legal minimum.
Open sourceSGSA stewarding factsheetsStewarding roles distinguish safety-critical points, spectator flow, overload prevention and roles that may already require licensed security activity.
Open sourceCzech Ministry of the Interior: security standards for event organisersThe Czech context adds legal and organisational recommendations for sports, cultural and social events.
Open sourceQuestions about the security calculator
Short answers on how to read the result and when a concrete deployment proposal is already needed.