Contact
Last updated: September 6, 2026
We read every message. Whether you have found a discrepancy in a correlation, want a module added, or need to exercise a data-protection right, this is the way to reach us.
Email: nofaceswithin@gmail.com
We normally reply within 2–3 business days, and within 30 days for privacy requests.
What to write about
| Topic | What to include |
|---|---|
| Calculation or methodology question | The module name, your input values and unit system, the result you obtained, and the result you expected with its source. |
| Reporting an error | A description of the discrepancy and, where possible, the reference (textbook, standard or manufacturer data) you compared against. Corrections of this kind get priority. |
| Requesting a new module | The calculation you need, the governing equations or standard, and the typical engineering context. |
| Advertising and partnerships | Your organisation and what you have in mind. |
| Privacy and data protection | The right you wish to exercise. See the Privacy Policy. |
| Copyright | Identification of the work, the URL concerned, and your contact details. |
A note on engineering advice
We are glad to clarify how a module implements a method, which correlation it uses and where its validity limits lie. We cannot, however, review, approve or take responsibility for a specific design. Any result from this Site must be verified by the qualified professional responsible for the project, as set out in our Engineering Disclaimer.
Before you write
- Each calculator has a methodology section explaining its equations, assumptions and validity range — the answer is often there.
- The calculators run entirely in your browser. If a chart or the PDF export does not appear, a content blocker or a lost connection to a content delivery network is the usual cause; try reloading with blockers disabled.
- Include your unit system (SI or USCS). Most reported discrepancies come from a unit mismatch.
Site information
Site: Engineering Suite B2B — https://mccabe-solutions.com
Scope: 28 browser-based engineering calculators across thermodynamics, unit operations and fluid mechanics.
Email: nofaceswithin@gmail.com