Contact

Public calculator reports

For non-sensitive calculation errors, broken links, or general technical feedback, use NS Calculators public issues. Reports and replies are visible to other people. A GitHub account is required to submit an issue; no account is needed to use the calculators.

Protect your information

Do not post names, email addresses, phone numbers, home addresses, account details, financial documents, medical records, passwords, or other confidential information. Use made-up or anonymized example values that reproduce the calculation problem instead of your real personal inputs. Remove private information from URLs and images before sharing them.

What a technical report needs

• The calculator page URL, without private query parameters.
• Steps to reproduce the problem using invented example values.
• The actual result and the result you expected.
• A public formula, reference, or calculation supporting the correction, when available.

Private inquiries

A private contact channel is not currently published on this site. Do not use public issues for privacy requests, account information, confidential business proposals, or security-sensitive details. The privacy policy describes the site's current information practices.