Contact

Report an issue

The public CalmCalc issue tracker is the current channel for calculation corrections, broken pages and other non-sensitive feedback.

Open a report

Visit the CalmCalc issue tracker and choose “New issue”. Reports are public, so do not include private or identifying information. A response or resolution time is not guaranteed.

Calculation corrections

The most useful report includes the calculator name, selected mode and units, non-sensitive input values, expected result, observed result, and a reliable source supporting the correction.

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Do not post passwords, account numbers, medical records or other sensitive information. Urgent personal, medical, financial or safety needs should be directed to an appropriate qualified service, not this website.

Last reviewed: August 8, 2026