We aim to respond within a few business days.
What You Can Contact Us About
- Bug reports -- a tool is not working correctly or giving wrong results
- New tool suggestions -- an idea for a calculator or utility we should build
- Improvement requests -- a feature, UI change, or option for an existing tool
- Accuracy concerns -- a formula or calculation that seems off
- General questions -- anything else about the site
Quick Feedback
Every tool page has a "Suggest a Tool" and "Improve This One" button at the top of the page. These are the fastest way to send a quick suggestion without writing an email.
Business and Legal
For legal or business information, see the imprint. For data handling details, see the privacy policy.
Responsible Person
Marc Eisenhardt
Hohe Strasse 6/1
71116 Gaertringen, DE