Contact us

Questions, corrections and ideas for new tools are all welcome. If a result looks off, tell us which tool you used and what you entered, and we'll check it.

We read every message and usually reply within two business days.

Report a mistake

Please send corrections by email rather than through our team's social media accounts, so nothing gets missed. Include the page link, what you entered and what looks wrong. Every report is checked against the calculator and its sources by our editor, Khuwalid Khalid, and fixed pages show an updated date.

Contributions

If you'd like to contribute a guide or suggest a collaboration, use the same address with "Contribution" in the subject line. We only publish content that's genuinely useful to our readers.