Your Erlang Toolkit, Inside Excel
Erlang C, X, Chat and Blending formulas, built into Excel.
The most complete and accurate staffing calculation suite available for Excel.
Start calculating in under 5 minutes.
Millisecond performance
No lag, ever. Calculations run locally with no server calls and no waiting, even in large and complex spreadsheets.
Zero data exposure
Not a single byte of data leaves your machine. Runs entirely locally and fully compliant with GDPR and your IT security requirements, even in the most regulated environments.
Seats without strings
One key, centrally managed, covers every Windows machine on your plan. Reassign licenses freely, swap machines anytime, and scale as you grow.
The Complete Erlang Toolkit
Every Erlang formula you need, built as native Excel functions.
- Erlang C – The standard inbound model.
Agents, service levels and wait times from volume, AHT and SLA. - Erlang X – Erlang C plus abandonment, patience and redials.
More accurate for real-world contact centres. - Erlang Chat – Built for concurrent chat.
Handles multiple simultaneous sessions per agent natively. - Blending -Inbound and outbound in one model.
Optimise utilisation across both workstreams.
Why teams choose CCmath
Built for teams that need reliability, security and control. No dependencies, no surprises.
- Works without a Microsoft 365 license. Runs in any environment, including locked-down corporate setups that block external add-ins.
- Custom invoicing available.
- Support on every plan. Phone, ticket and email included as standard.
- One key, fully transferable. Move machines, grow your team, change your setup. Your license moves with you at no extra cost.
License and pricing
All plans are billed annually and include the full function set. Custom invoicing and volume discounts available on request.
One license key, centrally managed by one admin, covers every machine on your plan.
Try free for 30 days. No credit card, no automatic billing, no strings attached.
Without the Erlang tool, all calculations would need to be done manually, making the model less accurate and far more time-consuming. It’s definitely a 10/10 product that I would recommend to anyone.
Alex Maddison
Start in under 5 minutes!
1.
Create an account
Register at licenses.ccmath.com and verify your email address.
2.
Activate your free trial
Log in and activate your free trial from the dashboard. Your 30-day key is generated immediately. No credit card required.
3.
Download and install
Download the add-in and run the setup wizard (Windows only). Enter your trial key and start calculating!
4.
Start learning and exploring
Native Erlang for Python and R
If your workflow is built around Python or R, we have you covered. The same Erlang accuracy and ease, in the environment your data team already uses.
Run Erlang C, X, Chat, and Blending calculations natively in Python or R, with full access to the same formulas available in Excel.
Ready to run Erlang in Excel?
Get up and running in under 5 minutes. Download the add-in, activate your license, and start calculating.
No configuration, no server setup, no IT ticket required.



