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Contact Xero Tools
Send a calculator request, report a formula issue, or share feedback about a page. Messages are stored securely without raw IP addresses.
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Report a calculation issue, request a calculator, or tell us what to improve.
What to include
- The calculator name or page URL, if your message is about a specific tool.
- The input values you used when reporting a formula or result issue.
- The calculator you want built next, including units or options it should support.