Get in touch
To report a bug in one of the calculators, suggest a new tool, ask about the privacy policy, or anything else related to the site, the direct channel is this email address:
What's useful to include
When reporting a bug, it helps to mention which tool was in use, what values were entered, and what result was expected instead of what actually showed up. For a new tool suggestion, describing the use case is enough — no need to spell out the implementation.
Other channels
The project can also be followed on Instagram, though email remains the most direct way to reach out about the site itself.