COVID Event Risk Calculator

Estimate risk of COVID exposure at events. Based on prevalence and group size.

Event Parameters

Attendees

Prevalence

*Enter the estimated number of active infectious cases per 100,000 people in your area.

Statistical Risk

Infection Probability1.2%

Risk LevelLow Risk

Probability Insight

In a group of 50 people, there is a 1.2% chance that at least one person is currently infectious, given the local rate of 25/100k.

Overview

Event risk depends on prevalence and group size.

Fun Facts

Formula: P(at least 1) = 1 − (1 − prevalence)^n. n = attendees.