Privacy Policy

Last updated: November 1, 2026

At Diagonal Calculator Pro (accessible from https://diagonalcalculatorpro.com/), one of our main priorities is the privacy of our visitors. This Privacy Policy document contains types of information that is collected and recorded by Diagonal Calculator Pro and how we use it.

If you have additional questions or require more information about our Privacy Policy, do not hesitate to contact us at privacy@diagonalcalculatorpro.com.

1. Zero Personal Data Retention in Calculations

All geometric calculations, dimension inputs, and PDF reports are processed locally within your web browser. We never store, log, or transmit your calculation measurements to external servers.

When you enter numerical lengths, widths, heights, or angles into our 2D Rectangle, 3D Box, or TV screen sizers, the mathematical execution is carried out entirely by your device's client-side JavaScript engine. No proprietary building blueprints, cutting dimensions, or student test answers are ever uploaded to our hosting servers.

2. Cookies and Web Storage

We use local storage strictly to remember your language preference and calculation unit settings. These preferences remain entirely on your device.

Web storage keys (such as dcp_lang) are maintained strictly on your device to ensure that if you switch your interface to Spanish, Arabic, Hindi, or French, your chosen language persists across page navigation without needing a user account or cookie tracking profile.

3. Log Files

Diagonal Calculator Pro follows a standard procedure of using log files. These files log visitors when they visit websites. All hosting companies do this as part of hosting services' analytics. The information collected by log files includes internet protocol (IP) addresses, browser type, Internet Service Provider (ISP), date and time stamp, referring/exit pages, and possibly the number of clicks. These are not linked to any information that is personally identifiable. The purpose of the information is for analyzing trends, administering the site, tracking users' movement on the website, and gathering demographic information.

4. Google AdSense & Third-Party Advertising

Google, as a third-party vendor, uses cookies to serve ads on our site. Google's use of advertising cookies enables it and its partners to serve ads to users based on their visit to our site and other sites on the Internet.

Third-party ad servers or ad networks use technologies like cookies, JavaScript, or Web Beacons that are used in their respective advertisements and links that appear on Diagonal Calculator Pro, which are sent directly to users' browsers. They automatically receive your IP address when this occurs. These technologies are used to measure the effectiveness of their advertising campaigns and/or to personalize the advertising content that you see on websites that you visit.

Note that Diagonal Calculator Pro has no access to or control over these cookies that are used by third-party advertisers. Users may opt out of personalized advertising by visiting Google Ads Settings or the Network Advertising Initiative Consumer Opt-Out Page.

5. GDPR Data Protection Rights (EEA & UK Users)

Under European GDPR and California CCPA regulations, visitors have the right to request information, opt out of non-essential tracking, and manage cookie preferences.

We would like to make sure you are fully aware of all of your data protection rights. Every user is entitled to the following:

• The right to access – You have the right to request copies of your personal data.
• The right to rectification – You have the right to request that we correct any information you believe is inaccurate.
• The right to erasure – You have the right to request that we erase your personal data, under certain conditions.
• The right to restrict processing – You have the right to request that we restrict the processing of your personal data.
• The right to object to processing – You have the right to object to our processing of your personal data.
• The right to data portability – You have the right to request that we transfer the data that we have collected to another organization, or directly to you.

6. California Consumer Privacy Act (CCPA) Rights

Under the CCPA, among other rights, California consumers have the right to:

• Request that a business that collects a consumer's personal data disclose the categories and specific pieces of personal data that a business has collected about consumers.
• Request that a business delete any personal data about the consumer that a business has collected.
• Request that a business that sells a consumer's personal data, not sell the consumer's personal data. We do not sell personal information.

7. Children's Online Privacy Protection Act (COPPA)

Another part of our priority is adding protection for children while using the internet. We encourage parents and guardians to observe, participate in, and/or monitor and guide their online activity. Diagonal Calculator Pro does not knowingly collect any Personal Identifiable Information from children under the age of 13.

8. Contact Information

If you have any questions or suggestions about our Privacy Policy, do not hesitate to contact our Data Protection Officer at privacy@diagonalcalculatorpro.com.