Contact
We welcome feedback, corrections, and partnership inquiries.
Last updated: January 19, 2026
Email us
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What to include
- The calculator page you were using (copy the URL).
- The inputs you entered and the result you expected.
- Any corrections or data sources you want us to review.
Accessibility requests
If you need assistance using the site or want to report an accessibility issue, please include “Accessibility” in the subject line so we can prioritize the request.