Contact

Tell us what could be better.

For corrections, suggestions, privacy questions, or business enquiries, email [email protected].

Reporting a calculation issue

Include the full page URL, the values you entered, the result you saw, and what you expected. This makes it possible to reproduce and test the issue.

Privacy and safety

Do not email passwords, payment-card numbers, financial account details, medical records, government identifiers, or other sensitive information. Calculator inputs normally stay in your browser and do not need to be included unless they are non-sensitive and necessary to reproduce an error.

Response expectations

Messages may be reviewed for relevance, abuse prevention, and necessary follow-up. A response or publication of a suggestion is not guaranteed.