Privacy Policy

This Privacy Policy explains how RectangulartoPolarCoordinates.com (“we”, “us”, “our”) handles information when you use our website and tools.

What we collect

• Usage data: basic, aggregated metrics (e.g., page views, approximate region, device type) that help us improve performance and UX.
• Server logs: standard web logs (IP address, user-agent, timestamps) used for security and reliability.
• Messages you send: if you contact us via the contact page, we receive the information you submit.
• Cookies/Storage: we may use strictly necessary cookies or local storage to remember simple preferences (e.g., angle mode or precision) and may use analytics cookies where permitted by law.

What we do not collect by default

• No user accounts or passwords are required to use the calculator.
• No payment information is requested.
• We do not ask you to submit government IDs.

Calculator inputs

The calculator updates instantly in your browser. We do not build features to persist your typed values to our servers. We also do not attach numeric inputs (like x, y, r, θ) to your identity. If we later add optional features that share or save inputs, we will clearly explain the behavior and—where required—ask for consent.

How we use information

• Provide, maintain, and improve the calculator and site
• Secure the service, prevent abuse, and troubleshoot
• Respond to messages you send
• Understand aggregate usage to prioritize features

Legal bases (EEA/UK)

• Legitimate interests for basic analytics, security, and service improvement
• Consent where required (e.g., non-essential cookies or optional features)
• Contract/Pre-contract when you contact us and reasonably expect a reply

Retention

Contact messages are kept as long as needed to respond and maintain records. Logs and analytics are kept for a limited period consistent with security and operations.

Sharing

We do not sell your personal information. We may share limited data with trusted service providers that help us run the site (e.g., hosting/CDN, security, analytics), bound by confidentiality and data-protection obligations. We may disclose information if required by law or to protect rights, safety, or integrity of the service.

International data transfers

Our providers may process data in multiple countries. Where required, we use appropriate safeguards (e.g., standard contractual clauses) offered by those providers.

Your choices & rights

• You can use the calculator without creating an account.
• If you’re in the EEA/UK, you may have rights to access, correct, delete, or restrict processing of your personal data. To exercise rights, contact us via the contact page.
• California residents may have rights under the CCPA/CPRA and can make a request through our contact page.

Cookies & analytics

If we use analytics, we prefer privacy-respecting tools and minimal data. If any non-essential cookies are introduced, we will provide notice/controls where required by law.

Data security

We take reasonable technical and organizational measures to protect information. No internet service is 100% secure, but we work to keep risk low.

Children

This site is not directed to children under 13 (or the age required by local law). If you believe a child provided personal information, please contact us so we can delete it.

Changes

We may update this policy from time to time. If changes are material, we’ll take reasonable steps to notify you (e.g., a site banner).

Contact

Questions about privacy? Reach us via the contact page.

Last updated: November 4, 2025