// multi-utility computation suite · offline · instant · precise
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sci.Erlang-C-call-centre Calculator
Calculates the Erlang C probability of queuing in an M/M/c call centre, expected wait time, and required agents for a target service level. Erlang C assumes infinite queue (no abandonment) — at 80% utilisation with 10 agents, P(wait) ≈ 24%; adding one agent drops it to 13%.
Inputs
A Erlangs
Reference formula or conversion factor shown for context.
N Agents
Count of items or occurrences.
Results
Erlang C (P(wait) probability)
Sample size or count used in the calculation.
agent utilisation
The value at the specified point or condition.
average wait time (at 60s AHT)
The arithmetic mean -- sum divided by count.
P(wait) = C(N,A) Erlang C formula
The specific form or variant of the result.
SLA estimate (30s target)
The value at the specified point or condition.
recommendation
Suggested action or value based on the computed results and applicable best-practice guidelines.