For all enquiries — feedback, bug reports, calculator suggestions, partnership and press requests — please write to jeancykalonji50@gmail.com. We aim to reply within 2 business days.
Suggest a calculator
Missing a calculator you use often? Send us the name, the formula and a worked example. If it fits the catalog and helps a wide audience, we will build and publish it for free.
Report a bug or wrong result
If a calculator returns a result you think is incorrect, email us with the calculator name, the inputs you used, the result you got and the result you expected. We treat correctness reports as our top priority.
Press & advertising
For press enquiries or advertising on Calcly, contact jeancykalonji50@gmail.com with the subject line "Press" or "Advertising".