Privacy Policy
Last Updated: March 27, 2026
Introduction
Concrete Block Calculator operates the website concreteblockcalculator.org. This Privacy Policy explains what information we collect, how we use it, and your rights regarding that information.
Information We Collect
We do not collect personal information directly. Our calculator runs entirely in your browser — your wall dimensions, block sizes, and cost inputs are never sent to our servers or stored anywhere.
However, we use third-party services that may automatically collect certain data:
- Pages visited and time spent on each page
- Browser type and version
- Device type (desktop, mobile, tablet)
- Screen resolution
- Approximate geographic location (country/region level)
- Referring website or search term
- IP address (anonymized by analytics providers)
Third-Party Services
We use the following third-party services, each of which may collect data as described:
Google Analytics (GA4)
- Purpose:
- Understand how visitors use our site so we can improve it
- Data:
- Page views, session duration, user interactions, device and browser info, approximate location
- Cookies:
- _ga, _ga_* (expire after 2 years)
Google AdSense
- Purpose:
- Display relevant advertisements to support the free operation of this tool
- Data:
- Ad impressions, clicks, browsing behavior for ad personalization
- Opt-out:
- You can opt out of personalized ads at adssettings.google.com
Cloudflare
- Purpose:
- Content delivery, performance optimization, and security protection
- Data:
- IP address, request headers, performance metrics
- Cookies:
- __cf_bm (bot management, expires after 30 minutes)
How We Use Information
- Understand which features are most useful to visitors
- Improve site performance and user experience
- Detect and prevent abuse or security threats
- Support the site through relevant advertising
We do not sell, rent, or share your personal information with third parties for their own marketing purposes.
Data Retention
- Google Analytics data is retained for 14 months
- AdSense data is managed by Google per their retention policies
- We do not maintain our own databases of user information
Children's Privacy
Our site is not directed at children under 13. We do not knowingly collect information from children.
Your Rights
- Opt out of tracking: Use browser privacy settings or extensions
- Opt out of personalized ads: Visit adssettings.google.com
- Delete cookies: Clear cookies through your browser settings
- Request information: Contact us to ask what data, if any, we hold
Changes to This Policy
We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated "Last Updated" date.
Contact Us
If you have questions about this Privacy Policy, contact us at:
contact@concreteblockcalculator.org