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Contact
Use this form to send correction requests, site issue reports, content questions, and business inquiries related to this website.
Send a message
Use the form below if you want to report a factual issue, flag a broken page, ask a question about a tool, or send a business-related inquiry.
What you can contact us about
- Factual correction requests
- Broken links, technical issues, or accessibility concerns
- Questions about published tools or written content
- Business, media, or other site-related inquiries
What to include
Include enough detail to identify the page and reproduce the question when a calculator result or written explanation looks unclear.
- The exact page URL
- The inputs used, if a calculator result looked wrong or confusing
- The formula, result, link, or wording that looked unclear
- The expected value, source, screenshot, or wording concern that supports the request
- A clear subject line for business or rights-related messages
Reply expectations
Messages are reviewed as time allows. A personal reply is not guaranteed for every inquiry.
Reports about broken pages, likely factual corrections, accessibility issues, and legal notices are reviewed for possible site updates. Some messages may be handled by updating a page rather than by sending a direct reply.
Privacy and personal information
Please do not send passwords, payment data, government identification numbers, or other sensitive personal information. For details about how inquiry information is handled, refer to the Privacy Policy.