Contact PlainCalc

Found a wrong number? Tell us.

PlainCalc is an independent website run by Alex Mauricio. Fee schedules change, marketplaces quietly update their terms, and calculators have edge cases — if you spot a wrong assumption, a math bug, or a confusing result, this form goes straight to the person who maintains the site. We read every message.

What helps us fix things fast

• Which calculator page you were on (paste the URL).
• The exact inputs you entered and the result that looked wrong.
• What you expected instead, and where you saw the correct figure (a link to the marketplace's fee page is ideal).

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Other pages

How the site works: About PlainCalc. How your data is handled: Privacy Policy. What the calculators are (and aren't): Disclaimer.