Privacy Policy

Last updated: September 2026

1. Introduction

Welcome to Big Number Calculator (https://www.bignumbercalculator.com). Your privacy is important to us. This Privacy Policy explains what information we collect, how we use it, and your choices when you visit and use our website and tools, including our arbitrary-precision calculator, Scientific Notation Converter, and Number to Words Converter (collectively, "the Service").

By using the Service, you agree to the practices described in this Privacy Policy. If you do not agree, please discontinue use of the Service.

2. Information We Do Not Collect

All calculations are performed entirely within your browser. Big Number Calculator does not collect, store, transmit, or have access to any numbers you enter, expressions you compute, or results you generate. Your calculation data never leaves your device. This applies to all tools on the Service, including addition, subtraction, multiplication, division, exponentiation, factorial, GCD, LCM, scientific notation conversion, and number-to-words conversion.

We do not require you to create an account, log in, or provide any personal information to use the calculator or any of our tools.

3. Information We Automatically Collect

When you visit the Service, certain non-personally identifiable information may be collected automatically through analytics and advertising services. This may include:

• Usage Data: Pages visited, time spent on pages, referring URLs, and click patterns.
• Device Information: Browser type and version, operating system, screen resolution, and device type (desktop, tablet, or mobile).
• Network Information: Anonymized IP address, approximate geographic location (country or region level only), and internet service provider.
• Language Preferences: Your browser's preferred language setting, used to serve content in your language where available.

This information is collected in aggregate and cannot be used to identify you personally.

4. Cookies and Similar Technologies

The Service uses cookies and similar technologies for the following purposes:

• Essential Cookies: To remember your language preference and ensure the site functions correctly.
• Analytics Cookies: To help us understand how visitors use the Service so we can improve the user experience. These cookies are provided by third-party analytics services such as Google Analytics.
• Advertising Cookies: Third-party advertising partners (such as Google AdSense) may set cookies to display relevant advertisements based on your browsing activity across the web.

You can manage or disable cookies through your browser settings. Please note that disabling certain cookies may affect the functionality of the Service.

5. Third-Party Services

The Service integrates with the following third-party services, each governed by their own privacy policies:

• Google Analytics: Used to collect anonymous usage statistics. Google Privacy Policy
• Google AdSense: Used to serve advertisements. Google may use cookies to serve ads based on your prior visits to this and other websites. Google Ads Policy
• Contact Form Provider: If you use the contact form on our Contact Us page, your message, name, and email address are processed through a third-party form service to deliver your inquiry to us.
• Hosting Provider: The Service is hosted on third-party infrastructure that may log standard server access information (IP addresses, request timestamps).

We encourage you to review the privacy policies of these third-party services for details on how they handle your data.

6. Advertising

The Service is supported by advertising. Third-party ad networks, including Google AdSense, may use cookies, web beacons, and similar technologies to collect information about your browsing activity to provide you with targeted advertisements. You can opt out of personalized advertising by visiting Google Ads Settings or aboutads.info.

7. How We Use Information

The limited information we collect is used solely to:

• Operate and maintain the Service.
• Understand usage patterns and improve our tools and content.
• Serve relevant advertisements to support the free availability of the Service.
• Respond to inquiries submitted through the contact form.
• Detect and prevent abuse or technical issues.

We do not sell, rent, or share your personal information with third parties for their direct marketing purposes.

8. Data Retention

Since we do not collect personal data through the calculator tools, there is no personal calculation data to retain. Analytics data is retained in aggregated, anonymized form in accordance with the retention policies of our analytics providers. Contact form submissions are retained only as long as necessary to respond to your inquiry.

9. Data Security

The Service is served over HTTPS to ensure all communications between your browser and our servers are encrypted. Since all calculations occur locally in your browser, your mathematical data is never transmitted over the network. While no method of electronic transmission is 100% secure, we take reasonable measures to protect the information that passes through our Service.

10. Your Rights and Choices

Depending on your jurisdiction, you may have the following rights regarding your data:

• Access and Portability: Request information about data associated with your visit.
• Deletion: Request deletion of any data we may hold (e.g., contact form submissions).
• Opt-Out: Disable cookies through your browser settings or opt out of personalized ads through the links provided in Section 6.
• Do Not Track: We respect Do Not Track (DNT) browser signals where technically feasible.

To exercise any of these rights, contact us at [email protected].

11. International Users

The Service is accessible worldwide. If you are visiting from the European Economic Area (EEA), United Kingdom, or other regions with data protection laws, please note that any information collected is processed in accordance with this Privacy Policy. By using the Service, you consent to the transfer and processing of your information as described herein.

12. Children's Privacy

The Service is intended for general audiences and is designed to be a useful educational tool. We do not knowingly collect personal information from children under the age of 13 (or the applicable age of consent in your jurisdiction). If you believe a child has provided us with personal information, please contact us at [email protected], and we will take steps to delete such information promptly.

13. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or applicable laws. When we make changes, we will update the "Last updated" date at the top of this page. We encourage you to review this Privacy Policy periodically. Your continued use of the Service after any changes constitutes your acceptance of the updated policy.

14. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us at:

• Email: [email protected]
• Website: Contact Us Page