Terms of Service

Last updated: February 17, 2026

1. Acceptance of Terms

By accessing and using Online Statistics Calculator at onlinestatscalculator.com (the "Service"), you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, please do not use the Service.

2. Description of Service

Online Statistics Calculator provides free, web-based statistical analysis tools including:

  • Descriptive statistics calculations (mean, median, mode, standard deviation, variance)
  • Confidence interval construction (t-distribution, z-distribution, Wilson score)
  • Hypothesis testing (t-tests, z-tests, chi-square tests)
  • Correlation analysis (Pearson, Spearman, Kendall)
  • Linear and polynomial regression analysis
  • Probability distribution calculations (Normal, Exponential, Uniform, Poisson)
  • Grade curving tools
  • Educational blog content and statistical guides

All calculations are performed locally in your web browser. No data is transmitted to or stored on our servers.

3. Educational Purpose and Accuracy Disclaimer

The Service is provided for educational and informational purposes only. While we strive for mathematical accuracy and validate our implementations against established statistical software (Python SciPy, R), you should be aware of the following:

  • Not a substitute for professional tools. For critical research, clinical trials, regulatory submissions, or high-stakes decisions, results should be verified using professional statistical software such as R, SAS, SPSS, or Python SciPy.
  • No warranty of accuracy. Although we cross-validate our calculations and maintain tolerances of ±0.001 for most statistical measures, we do not guarantee that every result will be error-free in all circumstances.
  • User responsibility. You are responsible for verifying the appropriateness of a statistical method for your specific use case, checking that assumptions are met, and interpreting results correctly.

4. Use of the Service

You agree to use the Service only for lawful purposes. You may not:

  • Use the Service in any way that violates applicable laws or regulations
  • Attempt to interfere with or disrupt the Service or its underlying infrastructure
  • Use automated tools to excessively scrape, crawl, or access the Service in a way that degrades performance for other users
  • Reproduce, distribute, or create derivative works of the Service without permission
  • Remove or alter any copyright, trademark, or other proprietary notices

5. Intellectual Property

The Service, including its design, code, text, graphics, and educational content, is owned by Online Statistics Calculator and is protected by copyright and other intellectual property laws.

You are granted a limited, non-exclusive, non-transferable license to access and use the Service for personal, educational, and research purposes. The results generated by our calculators from your input data belong to you.

6. User-Provided Data

Any data you enter into our calculators (manually, by pasting, or by uploading CSV files) is processed entirely within your web browser. We do not collect, store, transmit, or have access to your data. You retain full ownership and control of your data at all times.

7. Third-Party Services

The Service uses third-party services that have their own terms and conditions:

8. Limitation of Liability

To the maximum extent permitted by applicable law, Online Statistics Calculator and its operators shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to:

  • Loss of profits, data, or business opportunities
  • Errors or inaccuracies in statistical calculations
  • Decisions made based on results from the Service
  • Service interruptions or unavailability
  • Any damages arising from your use of or inability to use the Service

The Service is provided on an "as is" and "as available" basis, without warranties of any kind, either express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, or non-infringement.

9. Indemnification

You agree to indemnify, defend, and hold harmless Online Statistics Calculator and its operators from any claims, liabilities, damages, losses, or expenses (including reasonable attorney fees) arising from your use of the Service or violation of these Terms.

10. Modifications to the Service

We reserve the right to modify, suspend, or discontinue the Service (or any part of it) at any time, with or without notice. We are not liable to you or any third party for any modification, suspension, or discontinuation of the Service.

11. Changes to These Terms

We may update these Terms from time to time. The updated version will be indicated by a revised "Last updated" date at the top of this page. Your continued use of the Service after changes are posted constitutes your acceptance of the revised Terms.

12. Governing Law

These Terms shall be governed by and construed in accordance with the laws of the United States, without regard to conflict of law principles. Any disputes arising from these Terms or your use of the Service shall be resolved in the courts of competent jurisdiction.

13. Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary so that these Terms shall otherwise remain in full force and effect.

14. Contact Us

If you have any questions about these Terms, please contact us: