How to reach the site
Contact is by email. Messages go to the administrator address published below, which is the single channel for corrections, questions, privacy requests, licensing, and everything else concerning cleancalculators.org.
There is no telephone number, no chat window, and no ticketing portal, and the site does not maintain a public mailing address. If you need an entity name or address for a formal purpose such as an invoice, a takedown notice, or a licence, ask for it and it will be supplied.
What to include
For a correction, include the page URL, the exact value or wording, the result you expected, and the source or measurement that supports your report. For a privacy, licensing, or security question, describe the request clearly and do not send passwords, payment details, or unnecessary personal information.
Contact is an email link, not a site form. Messages are handled through the email providers and mailbox involved, as described in the Privacy Policy. There is no public ticket system or guaranteed response time. Read the Privacy Policy.
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