Contact CalculatorsOnline
Have a question about a calculator, noticed an incorrect result or want to suggest a new tool? We welcome feedback that helps make CalculatorsOnline more accurate, accessible and useful.
You can contact our team directly by email or submit your message through the Google Form provided below.
Contact by Email
For general inquiries, correction requests, website feedback and collaboration-related questions, email:
Please include a clear subject and enough information for us to understand your request.
Use Our Feedback Form
Prefer submitting a message online? Use the Google Form below to report a problem, recommend a new calculator or share suggestions.
The form is hosted by Google and may be subject to Google's privacy practices.
Send Us a Message
Complete the form below to send your feedback or inquiry. The information you submit is handled through Google Forms.
If the embedded form does not load, open the Google Form in a new tab .
Privacy reminder: Please do not submit passwords, bank account details, confidential documents, private medical records or other sensitive personal information.
How to Report a Calculator Error
If a calculator produces an unexpected result, a detailed report can help us understand and reproduce the issue.
When possible, include the following information:
- Calculator URL: The exact page where the issue occurred.
- Input values: The numbers and settings used in the calculation.
- Displayed result: The answer produced by the calculator.
- Expected result: The value you expected and how you calculated it.
- Reference: A relevant formula, official source or worked example, if available.
For accessibility or display issues, please mention your device, browser and any assistive technology used.
Prepare a Downloadable Feedback Report
You can also prepare a structured feedback report using the form below. This report is generated in your browser and downloaded to your device. It is not automatically sent to us.
After downloading, attach the report to an email addressed to team.contactadmin@gmail.com .
The downloadable report feature depends on the website's JavaScript being enabled.
What Can You Contact Us About?
Calculation Corrections
Report incorrect formulas, unexpected results, rounding issues or unclear calculation assumptions.
New Calculator Suggestions
Suggest useful calculators for finance, mathematics, health, education, engineering, conversions or everyday activities.
Website and Accessibility Issues
Let us know about broken links, mobile layout problems, keyboard navigation difficulties, unreadable text or other usability concerns.
Content Feedback
Share corrections or suggestions related to educational guides, calculation examples, explanations and supporting information.
What Happens After You Contact Us?
We aim to review useful feedback, investigate reproducible calculation issues and correct confirmed errors when practical.
Response times may vary depending on the type of inquiry and the number of messages received. We cannot guarantee a response to every submission.
Please note that our team cannot provide personalized financial, legal, medical or engineering advice.
For additional information, please review our Privacy Policy, Terms of Use, Disclaimer and Editorial Policy.