Terms of Use

Last updated: May 2026

Engineering disclaimer. RailCalcs is a reference tool only. Results must be independently verified by a suitably qualified engineer before use in any design, assessment, maintenance decision, or safety-critical application. Do not rely solely on these results for professional engineering work.

1. Acceptance

By using RailCalcs you agree to these terms. If you do not agree, please do not use the site.

2. No warranty — accuracy

RailCalcs is provided "as is" without warranty of any kind, express or implied. While every effort is made to ensure formulae and calculations are correct, the accuracy of results is not guaranteed. Errors, omissions, or approximations may exist.

The authors accept no liability for loss, damage, injury, or consequence arising from use of or reliance on the outputs of any calculator.

3. Not professional engineering advice

RailCalcs does not provide professional engineering advice. The tools are intended as aids for qualified engineers and experienced track practitioners who can evaluate the relevance and correctness of results in context.

Results should always be cross-checked against:

Applicable standards, codes of practice, and network rules
Site-specific conditions and constraints
Independent engineering calculations or peer review

4. Acceptable use

RailCalcs is free to use for personal, educational, and professional reference purposes. You may not:

Redistribute or sell the application or its content
Use automated tools to scrape or bulk-access the site
Misrepresent outputs as independently verified engineering results

5. Intellectual property

6. Third-party software and services

RailCalcs uses open-source components and third-party services including Bootstrap (MIT licence), Bootstrap Icons (MIT licence), and MapLibre GL JS (BSD-style licence). Mapping tools may also request map tiles from third-party providers (for example, OpenStreetMap tile services) and are subject to those providers' availability, terms, usage policies, and attribution requirements.

7. Mapping disclaimer

Map imagery, geolocation positioning, and derived map-based measurements are provided for reference only and may contain offsets, delays, or other inaccuracies. They must not be used as the sole basis for design, set-out, or safety-critical decisions.

8. Changes

These terms may be updated at any time without notice. Continued use of the site following any change constitutes acceptance of the updated terms.

9. Contact

Queries about these terms can be submitted via the feedback link in the app.