Calculation Questions: Ask about specific rating changes, expected scores, or rule implementations.
Contact Elo Chess Rating Calculator
Whether you have a question about a specific rating calculation, want to suggest a new feature, or need help embedding our tools on your website, we want to hear from you.
Common Topics
Issue Reporting: Let us know if a calculator output seems incorrect or if you encounter a bug.
Partnerships & Widgets: Inquire about embedding our calculators on your club or tournament website.
Feature Requests: Suggest new calculator modes, educational articles, or languages you'd like to see.
Providing clear details helps us process your request faster. The more context you can give about your specific calculation or issue, the quicker we can provide an accurate response.
How to Get the Best Support
For calculation discrepancies, please include your rating, the opponent's rating, the result, the K-factor, and the expected vs. actual output.
For bug reports, mention what device and browser you are using, and the exact steps to reproduce the issue.
For partnership inquiries, please include a link to your organization's website and describe your intended use case.
Our Commitment to You
We review every message submitted through this form. Because this tool is built for the global chess community, user feedback is our most important resource for improving accuracy, adding necessary features, and ensuring the site remains useful.
We typically respond to support inquiries and bug reports within 48 hours. Please ensure your email address is typed correctly so we can reach you with an answer.