Contact Us

We're a small team and we read every message. Use the form below to report a bug, suggest a new calculator, or send any other feedback.

Bug reports

Found a calculation that looks wrong? Tell us the inputs you used and the result you expected.

Calculator requests

Missing a calculator you need? We prioritize requests that come in from real users.

General feedback

Anything else — UX suggestions, content corrections, partnership inquiries.

We aim to respond within 1–2 business days. For privacy questions, see our Privacy Policy.