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Event capacity & crowd-safety calculator

Enter your venue size and the type of crowd. Get the safe capacity, the density risk, your Martyn's Law tier, and a checklist tailored to your event — instantly, free.

Usable standing space (excluding stages, bars & barriers).

RECOMMENDED SAFE CAPACITY
800
at 2 people/m² for this crowd profile
2D Visual Grid (10m × 10m Enclosure)2.0 people / m²
20 Occupants Simulated
Calculated Density2.0 /m²
Free-flowing — safe

Your Tailored Crowd Safety Plan

  • Set and enforce a hard capacity of about 800 at entrances — count in & out.
  • Martyn's Law enhanced duty applies — document vulnerability & preparedness procedures.
  • Separate entry and exit routes so ingress never clashes with egress.
  • Name one safety official empowered to halt the event immediately if density spikes.
  • Constantly monitor front-of-stage barriers — highest density, highest risk point.
Study Event Safety Management →Complete training to manage high-density crowd risks.
How it works

We divide your usable area — not the total footprint — by a safe space-per-person figure for your crowd type (more room for standing or moving crowds, less for seated), then flag the density risk and your Martyn's Law tier.

Why it matters

Crushes are driven by density, not headcount. At around 5+ people per square metre, individuals can no longer control their own movement and pressure travels through the crowd in waves. Setting a safe capacity from area is the single most important number for a venue.

Good practice
  • Base it on usable space — after stages, bars, barriers and furniture.
  • Lower the limit for standing, moving or alcohol-fuelled crowds.
  • Density is dynamic — monitor hotspots during the event, don't just set a door count.