Contact

Last updated 2026-08-13.

Get in touch

UnitChart is operated by UnitChart. The way to reach us is email: contact@unitchart.com.

There is no support queue and no chatbot. Mail goes to a person and is usually answered within a few days.

What is worth writing about

• A wrong result. This is the most useful mail we get — tell us the inputs and what you expected, and we will fix it or explain why the number is right.
• A missing feature, unit, or page you searched for and did not find.
• Privacy requests, under any law that gives you one.
• Copyright or abuse complaints.
• Accessibility problems — if something is unusable with a screen reader or a keyboard, we want to know and will treat it as a bug.