Contact
Have feedback or a calculator to suggest? We'd love to hear from you.
What to write in
The most useful messages tend to fall into one of these buckets:
- Bug reports. Tell us the calculator, the inputs you used, what you expected, and what you got. A copy of the result URL (from the share button) helps us reproduce the issue in seconds.
- Calculator improvements. If a tool is missing an option you need — extra units, a different output format, an additional input — let us know how you'd use it.
- Accuracy feedback. If a result looks wrong, send the inputs and the answer you expected. We take edge cases around leap years, ISO weeks, and month-end arithmetic seriously.
- Partnerships or affiliate inquiries. We're selective. Calcadian doesn't run ads on calculator pages and won't add affiliate links that don't directly help users.
For everything else, you can also email us directly at hello@calcadian.com.