Last updated: September 20, 2026
The short version
- Calculator inputs stay in your browser. We don't send your slab dimensions, pricing, or any other inputs to a server.
- No accounts, no signups, no email harvesting.
- No selling data, ever. We aren't a lead-gen site.
- No analytics or advertising scripts are currently loaded.
What we collect
Calculator inputs. Everything you type into a calculator (length, width, thickness, prices, etc.) is processed entirely in your browser. Nothing is sent to Concrete Slab Calculator servers.
Server logs. Like most web services, our hosting provider records IP address, user agent, and request URL for each page view. These logs are used to debug errors and prevent abuse. Retention and access are controlled by the hosting provider.
Analytics. No analytics product is currently configured. If that changes, this policy will identify the provider, information collected, purpose, retention, and consent controls before the tool is enabled.
Theme preference. When you toggle dark mode, we save the choice in your browser's localStorage so your preference sticks across visits. This stays on your device.
What we don't collect
- Your name, email address, or phone number (no signup exists)
- Calculator inputs or results (everything stays in your browser)
- Precise device location such as GPS, Wi-Fi, or cell-tower data
- Cross-site tracking IDs or advertising fingerprints
- Device sensors (camera, microphone, accelerometer)
Cookies
We use no cookies for tracking, advertising, or personalization. Browser localStorage is used only for the dark-mode preference. If we ever add a feature that needs a session cookie (e.g., saving your project list across visits), this policy will be updated and the cookie will be opt-in.
Third-party services
The site is statically hosted (no application server) and uses no third-party APIs at runtime. The contact form opens your local mail client via a mailto: link — your message goes through your own email account, not through us.
Advertising and consent
The site does not currently load Google AdSense or another advertising network. Before advertising is enabled, this policy will be updated to identify the advertising partners and explain their use of cookies, web beacons, IP addresses, and other identifiers. Where required, ads will not load until the visitor has made a choice through an applicable consent management platform.
Google explains how it uses information from publisher sites in its partner-sites privacy notice. Visitors can also review Google Ads Settings. These links describe Google's services; they do not mean those services are currently active on this site.
Children's privacy
The site is not directed at children under 13. We don't knowingly collect any personal information from children. If you believe a child has provided information, contact us and we'll delete it.
Your rights
We do not maintain calculator profiles or result histories. Hosting logs may still constitute personal data in some jurisdictions. If you live in the EU, UK, California, or another jurisdiction with privacy laws (GDPR, CCPA, etc.) and you have a data-rights request, contact us — we'll respond within the legally required timeframe.
Changes
We'll update this page when our practices change. The "Last updated" date at the top reflects the most recent revision.
Contact
Questions about privacy? Reach out.