Contact

Have questions, suggestions, or found an issue? We'd like to hear from you.

Email

For general inquiries, feedback, or bug reports, email us at:
[email protected]

Security Issues

For security-related concerns, please email:
[email protected]

Response Time

We typically respond to emails within 2-3 business days. Security issues are prioritized and addressed as quickly as possible.

Before Contacting

Please check these resources first—your question might already be answered:

• Browse the FAQ sections on calculator and guide pages
• Review worked examples for similar problems
• Check the guides for explanations of methods and concepts
• Visit the About page for information about the site

What to Include

When reporting issues or asking questions, please include:

• The specific page or calculator you're using
• The values you entered (if applicable)
• What you expected vs what you saw
• Your device and browser (if reporting a technical issue)

Note: This site does not collect user data through forms or analytics. Email is the only contact method to maintain user privacy.