Contact
Questions, corrections and ideas for PaidMath are welcome.
What to write to us about
- A number that looks wrong. Include the page address and what you entered. Formulas and worked examples are tested, so a mismatch is a bug we want to fix.
- A benchmark that is out of date. If you know of a newer published study, send the link. Every benchmark row cites its source.
- A calculator you would like to see.
- Partnerships and sponsorships. Sponsored links are always labelled, and they never change a calculation.
See the privacy policy for how email is handled, or read about PaidMath.