Contact CheckMatter
Questions, Corrections & Support
Use the public email below for calculator errors, outdated sources, accessibility or privacy concerns, partnerships, and general questions.
CheckMatter is independently founded and maintained by Ajit Naskar. We do not claim guaranteed response times, round-the-clock support, or services that are not currently published on the site.
Report a calculator problem
Please include the calculator URL, the exact inputs used, the result shown, the result you expected, your browser/device, and any authoritative source supporting the correction.
Do not email passwords, card numbers, health records, tax identifiers, or other sensitive personal data.
What happens after a report
We reproduce the calculation, compare the result with the displayed formula and cited sources, and correct verified issues. Material formula or interpretation changes receive an updated review date under the corrections policy.
CheckMatter does not publish invented testimonials, ratings, accuracy percentages, user totals, awards, uptime guarantees, or unsupported product claims.
Contact and support information reviewed: 1 September 2026.