Contact Calcooo

Found a bug, have a suggestion for a new calculator, or a general question? We'd like to hear from you.

Get in touch

Since Calcooo is a static site with no backend, please reach out through the following:

Report a calculation issue

If you believe a calculator is producing an incorrect result, please note the calculator name, the exact inputs you used, and the result you expected. This helps us verify and fix the formula quickly.

Suggest a new calculator

Have an idea for a calculator that isn't on the site yet? Let us know the category it belongs in and what inputs and formula it should use.

General questions

For anything else, including questions about how a specific calculator works, feel free to reach out via the channels linked from this site's hosting or social presence.