Epidemic Simulator

Model disease spread with SIR/SEIR/SIRD differential equations or agent-based spatial simulation. Adjust parameters and watch how interventions flatten the curve.

R₀ = 3.00R_eff = 0.00

Population Distribution

S: 0 (0.0%)I: 0 (0.0%)R: 0 (0.0%)

Population Curves

Effective Reproduction Number (R_eff)

Parameters

Contact rate (β)0.30Recovery rate (γ)0.10Mortality rate2%Initial infected5

Interventions

Vaccination rate0%Social distancing0%

Susceptible

Infected

Recovered

Day

How it works

Solves SIR differential equations using RK4 integration
R₀ = β/γ determines outbreak threshold (R₀ > 1 spreads)
Social distancing reduces effective β
Vaccination makes a fraction immune at start

All computations run entirely in your browser. ODE mode uses Runge-Kutta 4 numerical integration. Agent mode simulates individual particles with stochastic infection dynamics.