All calculation arithmetic (square footage, lengths, depths, tonnage, and custom bulk density inputs) executes 100% locally in your web browser using client-side JavaScript. We do not store, transmit, or monetize your project dimensions or cost estimates on any remote server.
1. Overview & Core Privacy Promise
SandCalculators.com ("we", "us", or "our") provides free, high-precision engineering calculation tools for civil aggregates, masonry, landscaping, and construction materials. We are deeply committed to safeguarding the privacy of our website visitors, contractors, and DIY users.
This Privacy Policy explains what limited information we receive when you visit our website, how that data is used, and the rights you have regarding your personal information under international data protection laws, including the European General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA / CPRA).
2. Information We Collect (And Don't Collect)
We do not require user account registration, passwords, credit card numbers, or contact details to use any of our calculation tools.
A. Information You Voluntarily Provide
When you submit a query via our Contact Form or email us directly, we collect your name, email address, inquiry topic, and message content to respond to your support request.
B. Automatically Collected Technical Data
Like virtually all web services, our web servers and standard CDN layers automatically log standard connection metadata, including:
- Internet Protocol (IP) address (anonymized/truncated where required by law)
- Browser type, operating system, and device screen dimensions
- Referring URLs, pages viewed, and timestamps of access
- HTTP response status codes and server performance telemetry
3. Client-Side Calculation Processing
Our Universal Sand Calculator, Paver Sand Calculator, Polymeric Joint Sand Calculator, and all other estimating modules are architected as static, client-side web components.
When you adjust input sliders, enter trench depths, or choose aggregate densities (e.g. 100 lb/cu ft), all mathematical computation happens in your local device's memory. No project blueprints, budget estimates, or material quantity records are transmitted to external databases.
5. Third-Party Services & Links
Our site may contain informational links to third-party engineering standard organizations (e.g. ASTM International, ICPI), aggregate quarries, or product manufacturers.
We have no control over the privacy policies or practices of third-party external websites. We encourage you to review the privacy statements of any external site you visit.
6. Data Security Measures
We employ strict industry-standard technical measures to protect our infrastructure and any communications you send us:
- Full 256-bit TLS/SSL encryption for all data in transit (HTTPS).
- Strict Content Security Policy (CSP) headers to prevent cross-site scripting (XSS).
- DDoS mitigation and web application firewalling via edge CDN infrastructure.
7. Your Rights (GDPR, CCPA & Global)
Depending on your location, you have statutory rights concerning personal data:
Right to Access & Portability: You may request confirmation of whether we hold personal communications from you.
Right to Erasure / Deletion: You may request that we permanently delete your email correspondence from our support inbox.
Do Not Sell or Share My Information: We do not sell, rent, or trade any personal data to third parties for monetary or other consideration.
8. Children's Privacy (COPPA Compliance)
SandCalculators.com is an educational and engineering reference tool intended for general construction and DIY audiences. We do not knowingly collect or solicit personal data from children under the age of 13. If you believe a minor has submitted personal information, please contact us immediately for deletion.
9. Privacy Officer Contact Details
If you have any questions, comments, or data privacy requests regarding this policy, please reach out to our privacy coordinator: