Contact

For questions, corrections or privacy requests, email lsm58421@gmail.com.

To report a wrong result or an unclear explanation, the quickest way is the “Report a problem or suggest an improvement” button near the bottom of each tool page. It records the tool name and version, so a problem can be found without guessing. You can read the full report before you send it, and your measurements are included only if you tick the box.

Messages and reports are read and confirmed errors are fixed, but no reply time is promised. Please do not send passwords, payment details or personal documents.

Common questions are answered in the FAQ.