Corrections and errors

If a calculator looks wrong, or a source link is out of date, please tell us. We take corrections seriously on health topics.

Last updated 21 October 2026

How to report

Email hello@healthcalculators.co.uk with:

  • the calculator page address
  • what you entered
  • what you expected, and why (a public NHS or GOV.UK link helps)
  • whether it is the maths, the wording or a broken source

What happens next

We check the report, fix confirmed errors and update the last checked date on the page. Clear factual errors come before matters of style. If a correction changes a result, we say so on the page.

Emergencies

Please do not use email for medical emergencies. In the UK, call 999 in an emergency, or NHS 111 for urgent advice.