Contact us
ConvertMaster is run by a small team. We read every message and usually respond within two business days.
- General questions and feedback: hello@convertmaster.pro
- Corrections to a conversion factor or article: editor@convertmaster.pro
- Privacy and advertising questions: privacy@convertmaster.pro
Reporting an error
If a number on this site looks wrong, please include the page URL, the input value, and the source you're comparing against (a textbook, a NIST publication, or another reputable reference). That makes it much faster for us to verify and fix.
Suggesting a unit
Missing a unit you use regularly? Tell us the unit name, the category (length, pressure, etc.), and the exact conversion factor with its source, and we'll add it in the next update.