General
Say hello
Bug reports, feature requests, calculator ideas, and friendly notes. The fastest way to reach the team behind the Site.
hello@clevercalculator.comSuggest a calculator
If we don’t have a calculator you need, send us a one-line note. Include a link to the formula or the worked example you would like us to use.
hello@clevercalculator.comSpecific topics
Privacy & data requests
To exercise a privacy right (access, deletion, correction, opt-out) or to ask a question about our Privacy Policy.
privacy@clevercalculator.comAccessibility
If you hit a barrier using the Site — with a screen reader, keyboard, magnifier or any other tool — please tell us so we can fix it.
accessibility@clevercalculator.comCopyright (DMCA)
For takedown notices, counter-notices, and other copyright matters. Please follow the process on our DMCA page.
dmca@clevercalculator.comLegal & business
Partnership inquiries, licensing requests, and questions about our Terms of Service.
legal@clevercalculator.comResponse times
We aim to respond within two US business days for general inquiries, and within five business days for legal, privacy, accessibility and copyright correspondence. We may take longer during US federal holidays.
What helps us reply faster
- For a bug, include the calculator URL, your browser, and the inputs that produced the surprising result.
- For a fact correction, link the primary source we should be using.
- For a privacy request, include enough information to confirm your identity (we will not ask for more than necessary).