COVID Event Risk Calculator

Free estimate COVID-19 transmission risk at events. This is an educational tool only - always follow local health guidelines.

Event Information

Check local health department data

Results

Enter event information to calculate risk

About COVID Event Risk

  • • Estimates probability of at least one infected person at event
  • • Based on: P = 1 - (1 - prevalence)^eventSize
  • • Does not account for vaccination, masking, or ventilation
  • • Always follow local health guidelines