Contact Calcboxer
Get in touch — we're happy to answer questions, take suggestions for new calculators and receive bug reports. Contact is handled via email only.
Email: contact@calcboxer.com
Service operator: Calcboxer (calcboxer.com)
Correspondence address: Rolna 15, 61-494 Poznań
Response time: typically 1–3 business days (Mon–Fri)
Correspondence languages: English and other supported locales
What to contact us about
- Questions about choosing a calculator or interpreting results
- Bug reports — e.g. unexpected result, typo in a description, translation inconsistency
- Ideas for a new calculator or improvements to an existing one
- Privacy, cookies and GDPR matters (Privacy policy)
- Partnership, advertising and cooperation — details on the Partnership page
- Requests for citation or linking to our content
Contact form
If you prefer not to open your email client manually, use the form below — when you click "Send message", your default email client (Outlook, Apple Mail, Thunderbird, etc.) will open a new message with the fields pre-filled, addressed to contact@calcboxer.com. You still need to confirm it with "Send" in your email client.
The form uses a mailto: link — no data is sent to our servers. If your email client isn't configured, write directly to contact@calcboxer.com.
About Calcboxer
Calcboxer is a collection of 600+ free online calculators — from BMI and percentages to loan instalments, car TCO and tools for AI Act and GDPR compliance. Everything runs in the browser, with no signup, and the unit system (metric / US) and currency are chosen in the page header. For details of our approach, formula sources and stated limitations, see the About page.