Privacy Policy

1. Introduction & Overview

Welcome to Gravel Calculator ("we," "our," "us," or "Gravel-Calc.com"). We respect your privacy and are committed to protecting any personal data you share with us. This Privacy Policy outlines the types of information collected when you access or use Gravel Calculator (including all tool pages such as Driveway, Cost, Square Footage, Concrete Slab, French Drain, Trench, Paver, Circular, Gravel Grid, and Aquarium calculators), how that information is processed, and the measures we take to safeguard your data.

2. Client-Side Calculation Privacy (Zero Server Processing)

Our core estimation tools are engineered with a privacy-first, client-side architecture. When you input project measurements (such as length, width, depth, diameter, aggregate density, cost per ton, or custom compaction ratios) into any of our calculators:

• 100% Client-Side Processing: All mathematical calculations, unit conversions, and visualization rendering occur locally inside your device's web browser using JavaScript.
• No Data Transmission: Your project dimensions, material choices, estimated budget figures, and shape inputs are never sent to, stored on, or transmitted across our servers.
• No Log Storage of Calculations: We do not log, track, or save your individual calculator entries or project specifications.

3. Information We Collect

While our calculators run locally, we may process minimal information under specific circumstances:

A. Voluntary Communications (Contact Form)

If you voluntarily reach out to us via our Contact Us form, we collect the information you provide, which typically includes your name, email address, message subject, and inquiry content. This data is used strictly to respond to your request or technical inquiry.

B. Automated Technical Logs & Network Security

Like standard web infrastructure, our web server and content delivery network (CDN) hosting providers automatically record standard technical log entries when your browser accesses Gravel-Calc.com. These logs may include:

• Internet Protocol (IP) address
• Browser type, version, and language setting
• Operating system and device class
• Referring URL and timestamps

These server logs are processed solely for network diagnostic purposes, server performance optimization, preventing denial-of-service (DoS) attacks, and maintaining platform security.

4. Cookies & Local Storage Technologies

Gravel-Calc.com is designed to function with minimal reliance on persistent tracking technologies:

• Essential Functionality Cookies / Local Storage: We may use client-side browser local storage or session cookies to remember your interface preferences (such as your chosen unit system: Imperial vs Metric) between page visits.
• No Third-Party Advertising Cookies: We do not deploy third-party behavioral advertising cookies, cross-site trackers, or user profiling cookies.
• Managing Cookies: You can manage or disable cookies at any time through your web browser's settings menu. Disabling cookies will not impair your ability to perform gravel calculations on our site.

5. Third-Party Service Providers

To ensure fast, reliable delivery and functionality, Gravel Calculator utilizes trusted third-party service infrastructure:

• Web Hosting & CDN (Vercel / Cloudflare): Serves static assets efficiently and ensures secure global SSL/TLS encryption.
• Contact Processing (Web3Forms): Processes contact form submissions securely via encrypted HTTPS endpoints.
• Web Fonts (Google Fonts): Provides optimized typography for UI readability.

Each third-party vendor processes technical data in accordance with their respective privacy policies and international security standards.

6. Data Retention & Protection

We enforce strict data minimization principles. Personal information received through contact inquiries is retained only as long as necessary to address your communication or maintain record compliance, after which it is securely deleted. All website traffic is encrypted in transit via standard 256-bit SSL (HTTPS) encryption.

7. Global User Rights (GDPR & CCPA/CPRA Compliance)

Depending on your jurisdiction (such as the European Economic Area, United Kingdom, or California), you hold legal privacy rights regarding your personal data:

• Right of Access & Correction: You may request confirmation of whether we hold personal data concerning you and request corrections.
• Right to Erasure ("Right to be Forgotten"): You may request the deletion of any personal communications sent to us.
• No Sale of Personal Data (CCPA): Gravel Calculator does not sell, rent, or trade personal data to any third parties or data brokers.

To exercise any of these rights, please submit your request via our Contact Us page.

8. Children's Privacy (COPPA)

Gravel-Calc.com is a general audience engineering and landscaping utility calculator. We do not knowingly solicit or collect personal information from children under the age of 13. If you believe a child has provided us with personal information, please contact us immediately for prompt deletion.

9. Policy Updates

We may update this Privacy Policy periodically to reflect technological changes, regulatory requirements, or new site features. The "Effective Date" at the top of this page will indicate when the latest revisions were posted.

10. Contact Us

If you have questions, feedback, or privacy concerns regarding this policy or our data practices, please visit our Contact Page.