Contact

Report a mistake

Use the Report an issue link under each calculator; it brings you here and tells us which calculator you mean. Please add the share link of your calculation so we can reproduce the result, say what you expected and why, and, if you can, link the official source or calculator.

Write to us

Email: support@rondigi.com. We read every message, but we answer on working days and cannot promise a reply time.

What we cannot do

We cannot give tax, legal or financial advice for your case. For that, please ask a professional or the competent authority.