Contact Us
Last updated: August 5, 2026
We'd love to hear from you - whether it's a bug report, a calculator you'd like us to build, a correction to an existing formula, or general feedback.
Reach us at mdfahimhasan894@gmail.com. We aim to respond within a few business days.
Reporting a calculation error
If you believe a calculator is producing an incorrect result, please include the calculator name, the exact inputs you used, and the result you expected - this helps us verify and fix issues quickly.
Business & partnership inquiries
For advertising, partnership, or licensing inquiries, please use the same email address above with the subject line "Business Inquiry."