Erlang C Calculator

Size agents from call volume, AHT, and a target service level. Returns occupancy and ASA.

Privacy: All calculations run in your browser. Nothing you type or upload is transmitted.

What this tool does

Free Erlang C calculator for contact centers. Enter calls/hour, AHT, and service level target; get required agents, occupancy, and expected ASA.

How to use

1. Fill the inputs or paste your data.

2. Click the calculate/decode/audit button.

3. Review the KPIs, charts, and callouts.

4. Use the related-tools strip at the bottom for the next step in your workflow.

Notes

• This tool is for estimation and exploration, not legal or regulatory certification.
• Report issues or request features via the feedback tab on the right edge of the page.