Queueing Theory Calculator (M/M/1 Model)

Calculate Your Queueing System Metrics

Average number of arrivals per unit of time (e.g., customers/hour).
Average number of customers served per unit of time (e.g., customers/hour).

Efficiently calculate key metrics for your queueing systems with our free online Queueing Theory Calculator. Analyze customer waiting times, server utilization, and system stability using M/M/1 model principles. Optimize service delivery and resource allocation for better customer experience and operational efficiency.

Formula:

For an M/M/1 queueing system (single server, Poisson arrivals, exponential service times):

  • Utilization (ρ): ρ = λ / μ
  • Average Customers in System (L): L = λ / (μ - λ)
  • Average Customers in Queue (Lq): Lq = λ2 / (μ * (μ - λ))
  • Average Time in System (W): W = 1 / (μ - λ)
  • Average Time in Queue (Wq): Wq = λ / (μ * (μ - λ))
  • Probability of Empty System (P0): P0 = 1 - ρ
Where:
  • λ (Lambda): Arrival Rate (e.g., customers per hour)
  • μ (Mu): Service Rate (e.g., customers per hour)

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