Privacy Policy

Your privacy matters to us. This page explains what data we collect, how we use it, and your rights.

Last Updated: 2026-09-07

1. Who We Are

Circle Skirt Calculator ("we", "us", or "our") operates the website circleskirtcalculator.net. We provide a free, browser-based tool for calculating fabric yardage for circle skirts, along with educational sewing content.

We are committed to protecting your privacy and handling your data transparently.

2. Information We Collect

We are designed to collect as little personal data as possible. Here is what we may collect:

2.1 Calculator Data

All calculations run entirely in your browser. Your waist measurements, skirt length, and fabric preferences are never transmitted to our servers. No calculation data is stored, logged, or shared.

2.2 Automatically Collected Data

When you visit our site, we automatically collect certain technical information through cookies and similar technologies:

  • IP address (anonymized where possible)
  • Browser type and version (e.g., Chrome 120, Safari 17)
  • Device type (desktop, mobile, tablet)
  • Operating system (Windows, macOS, iOS, Android)
  • Pages visited and time spent on each page
  • Referring URL (how you found us)
  • Approximate geographic location (country/region level only)

2.3 Contact Form Data

When you use our contact form, we collect your name, email address, and message. This data is processed through Web3Forms and is used solely to respond to your inquiry.

3. How We Use Your Information

We use the information described above for the following purposes:

  • Website operation and improvement: Understanding which pages are popular, which devices visitors use, and where we can improve the user experience.
  • Responding to inquiries: Replying to messages sent through our contact form.
  • Analytics and performance: Measuring website traffic, identifying technical issues, and optimizing page load times.
  • Advertising: Displaying relevant advertisements through third-party advertising networks (see Section 5).

We do not sell, rent, or trade your personal information to third parties for marketing purposes.

4. Cookies and Tracking Technologies

Our website uses cookies — small text files stored on your device — to enhance your experience and support our services.

4.1 Types of Cookies We Use

Cookie Type Purpose Duration
Essential Required for the website to function (e.g., language preference) Session / 1 year
Analytics Help us understand how visitors interact with our site (Google Analytics) Up to 2 years
Advertising Used to deliver relevant ads and measure ad performance (Google AdSense) Up to 2 years

4.2 Managing Cookies

You can control and delete cookies through your browser settings. Please note that disabling cookies may affect the functionality of certain features on our site. For more information on managing cookies, visit allaboutcookies.org.

5. Third-Party Advertising (Google AdSense)

We use Google AdSense to display advertisements on our website. Google AdSense uses cookies to serve ads based on your prior visits to our website and other websites on the internet.

  • Google's use of advertising cookies enables it and its partners to serve ads based on your visit to our site and/or other sites on the Internet.
  • You may opt out of personalized advertising by visiting Google Ads Settings.
  • You may also opt out of third-party vendor cookies by visiting the Digital Advertising Alliance opt-out page.

For more information about how Google collects and processes data, please review Google's Privacy & Terms.

6. Third-Party Services

In addition to Google AdSense, we use the following third-party services that may collect data:

  • Google Analytics — website traffic analysis. Google may use cookies to collect anonymous usage data. Opt out here.
  • Web3Forms — contact form processing. Their privacy policy applies to form submissions.
  • Vercel — website hosting. Standard access logs are maintained for security purposes.

7. Data Retention

  • Contact form submissions: Retained only as long as necessary to respond to your inquiry (typically no longer than 90 days).
  • Server access logs: Automatically deleted after 30 days.
  • Analytics data: Retained for up to 26 months in aggregated, anonymized form.

8. Data Security

We implement appropriate technical and organizational measures to protect your data, including:

  • HTTPS encryption across the entire website
  • Regular security updates and monitoring
  • Limited access to personal data on a need-to-know basis

However, no method of transmission over the Internet is 100% secure. While we strive to protect your information, we cannot guarantee absolute security.

9. Your Rights

Depending on your location (particularly under GDPR, CCPA, or similar legislation), you may have the following rights:

  • Right to access: Request a copy of the personal data we hold about you.
  • Right to rectification: Request correction of inaccurate or incomplete data.
  • Right to erasure: Request deletion of your personal data ("right to be forgotten").
  • Right to restrict processing: Limit how we use your data.
  • Right to object: Object to data processing based on legitimate interests, including direct marketing.
  • Right to data portability: Receive your data in a structured, machine-readable format.

To exercise any of these rights, please contact us at hello@circleskirtcalculator.net. We will respond within 30 days.

10. Children's Privacy

Our website is not directed at individuals under the age of 13 (or 16 in the European Economic Area). We do not knowingly collect personal information from children. If we become aware that a child has provided us with personal data, we will take steps to delete that information promptly.

11. International Data Transfers

Our website is hosted on servers that may be located outside your country of residence. By using our website, you consent to the transfer of your information to countries that may have different data protection laws than your country of residence.

12. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, or legal requirements. When we do, we will update the "Last Updated" date at the top of this page. We encourage you to review this page periodically.

13. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or your personal data, please contact us: