Write to zgrf2007@gmail.com. Please include the calculator name, page language, and a short description when reporting a problem.
What to contact us about
- Incorrect formulas, examples, translations, or broken pages
- Suggestions for making the calculators easier to use
- Privacy, analytics-consent, or accessibility questions
Protect your business information
Do not email passwords, payment details, Seller Central credentials, or confidential order and customer data. A simplified example is usually enough to explain a calculation issue.