Contact

Help us make the tools clearer.

Send feedback, report a calculation issue, or ask a question about the site.

Reporting a calculation issue

Include the calculator name, the numbers you entered, the result you saw, and the result you expected. For display or accessibility issues, mention your browser and device if possible.

Please do not send student IDs or private gradebook screenshots. We cannot access your school’s records or confirm your official grade.

Calculator inputs are not sent automatically. This page opens your own email app; it does not use a contact form.