Contact
No form and no account. Just send us an email.
Updated October 19, 2026
We read every message. You can write in any of the site’s languages.
What helps us most
- A result that looks wrong: tell us the calculator, the page language and the numbers you used.
- A figure or building rule that has changed: send us a link to the new version.
- A translation or local unit that reads oddly.
- A calculator you would like us to add.
What we will never ask for
We will never ask you by email for passwords, payment details or documents. Please describe the problem with example numbers instead.
When to expect a reply
KitPine is a small project. We usually reply within a few working days.