At Plastic Weight Calculator, we respect your privacy and are committed to protecting it. This privacy policy explains how we collect, use, and protect information when you use our calculator tools and website.

Information We Collect

Analytics Data

We use Google Analytics 4 to understand how visitors use our calculator and improve the user experience. This service automatically collects:

• Pages you visit on our site
• Calculator interactions (material selections, shape choices, which calculators you use)
• Device information (screen size, browser type, mobile vs desktop)
• Approximate location (country and city level, derived from IP address)
• Time spent on pages and how you navigate our site
• Referral source (which website or search engine brought you here)

What We Don't Collect Passively

We want to be clear about what we do not collect in the normal course of browsing the site:

• No personal information passively - We don't collect names, email addresses, phone numbers, or postal addresses unless you voluntarily submit them via a wholesale inquiry form (see below)
• No calculator input values - The specific dimensions, weights, or measurements you enter in our calculators are not transmitted to our servers as part of normal browsing
• No account information - We don't require registration, so we don't have user accounts or passwords
• No financial information - We don't process payments or collect credit card information
• No precise location - We don't access GPS or track your exact location

Important: All calculator computations happen entirely in your browser. Your input values (dimensions, weights, etc.) never leave your device unless you choose to attach them to a wholesale inquiry.

Wholesale Inquiry Form (Voluntary Submissions)

Some calculators offer a "Get wholesale quotes" option. If you choose to submit an inquiry, we collect the information you provide so we can match you with relevant suppliers:

• Contact details you enter - name, work email, company, and (optionally) phone number, timeline, and project notes
• Your latest calculation - material, shape, dimensions, weight, density, and the page URL — attached so suppliers can quote accurately
• Approximate location - your country and region, derived from your IP address at the moment of submission, to match you with suppliers who can serve your area
• Submission timestamp and basic timing data - used only to filter out automated bot submissions

How we use inquiry data: We forward your inquiry to one or more suppliers we judge to be a good match for your material, quantity, and region. We may follow up with you by email to confirm a supplier connected with you. We do not sell your data, add you to marketing lists, or share it for any purpose other than connecting you with suppliers for your stated inquiry.

Inquiry submissions are stored by our forms backend (Netlify Forms) and retained for up to 12 months for follow-up and supplier-attribution purposes. You can request deletion at any time by contacting us.

How We Use Information

We use the analytics data we collect to:

• Understand which calculators are most useful to visitors
• Identify and fix technical issues or errors
• Improve calculator user experience and functionality
• Determine which materials and features to prioritize
• Optimize the site for different devices and browsers
• Create better content and educational resources

Cookies and Tracking Technologies

What Are Cookies?

Cookies are small text files stored on your device by your web browser. They help websites remember information about your visit.

Cookies We Use

Session Storage

We also use browser "session storage" to temporarily remember how many calculations you've performed during your current visit. This data is stored only in your browser and is automatically cleared when you close the tab or browser.

Third-Party Services

Google Analytics

We use Google Analytics 4, a web analytics service provided by Google LLC. Google Analytics uses cookies to help us analyze how users interact with our site.

Google may use the collected data to contextualize and personalize ads in its own advertising network. For more information about how Google uses data, visit:

• Google Privacy Policy
• How Google uses data when you use our partners' sites or apps

Your Privacy Choices

Opt-Out of Analytics

You have several options to control or disable analytics tracking:

• Cookie Banner: When you first visit our site, you can decline cookies via our consent banner
• Browser Settings: Most browsers allow you to refuse cookies or delete existing cookies through their settings
• Google Analytics Opt-out: Install the Google Analytics Opt-out Browser Add-on
• Do Not Track: Enable "Do Not Track" in your browser settings
• Private Browsing: Use your browser's incognito or private browsing mode

Note: Opting out of analytics will not affect the functionality of our calculators. They will continue to work perfectly without tracking.

Managing Cookie Preferences

You can change your cookie preferences at any time by clearing your browser's local storage and refreshing the page. This will cause the cookie consent banner to appear again.

Data Security

We take reasonable measures to protect the information collected through our site:

• Our website uses HTTPS encryption for all communications
• We don't store calculator input data on our servers
• All calculations are performed locally in your browser
• Analytics data is stored by Google on secure servers
• We have limited access to only aggregated, anonymized analytics reports

Data Retention

Google Analytics retains user-level and event data for 2 months, after which it is automatically deleted or aggregated into summary statistics. We do not store any calculator-specific data ourselves.

Children's Privacy

Our site does not knowingly collect information from children under 13 years of age. Our calculators are designed for engineering, manufacturing, and educational purposes and are not directed at children. If you believe a child has provided information to our site, please contact us and we will work to delete such information.

International Users

Our website is hosted in the United States. If you access our site from outside the United States, please be aware that your information may be transferred to, stored, and processed in the United States where our servers are located. By using our site, you consent to this transfer.

European Union Users

If you are located in the European Economic Area (EEA), you have certain rights under the General Data Protection Regulation (GDPR), including the right to access, correct, or delete your data, and to object to or restrict certain processing. Since we collect only anonymized analytics data and don't maintain user accounts, there is no personal data to access or delete. You can opt out of all tracking at any time using the methods described above.

Changes to This Privacy Policy

We may update this privacy policy from time to time to reflect changes in our practices or for legal, operational, or regulatory reasons. When we make changes, we will update the "Last Updated" date at the top of this policy. We encourage you to review this policy periodically.

Significant changes will be prominently posted on our website or communicated through a notice on our homepage.

Your Consent

By using our website, you consent to this privacy policy and our use of cookies and analytics as described herein. If you do not agree with this policy, please do not use our website or decline cookies when prompted.

Additional Resources

• Google Privacy Policy
• Google Analytics Data Protection
• Google Analytics Opt-out Browser Add-on