Found a bug, spotted a wrong result, or want to suggest a calculator? We'd like to hear about it.
The fastest way to reach us is email: hello@calcbundle.net
Let us know which calculator, the exact numbers you entered, and what result you expected versus what you got — that's usually enough for us to track down the issue.
Tell us what it should calculate and, if you have one in mind, an example of the inputs and outputs you'd expect to see.
General feedback, partnership questions, or anything else — just send it our way.