Contact Us
Questions, feedback, or a grading system you'd like us to add? We read every message.
The best way to reach us is by email. We aim to reply within a few business days.
What to write about
- Bug reports — if a calculator gives an unexpected result, tell us the numbers you entered.
- New calculators — request a grading system from your country, school, or university.
- Feedback — anything that would make the tools clearer or faster.
- Partnerships — get in touch about working together.
Please note we cannot access or change your official school records — for transcript questions, contact your institution's registrar.