Privacy Policy

Last updated: 2026-08-18

MaterialSum provides free, browser-based material calculators. This policy explains what information is collected when you use this site and how it is used.

Google Analytics (GA4)

MaterialSum uses Google Analytics 4 (GA4) to understand how visitors use the site. GA4 collects general usage data, including pages visited, time on site, device and browser type, approximate geographic region, and referral source.

Cookies and similar technologies

GA4 sets first-party cookies (such as _ga and _ga_*) in your browser to distinguish visitors and measure usage. These cookies are used for analytics only — not for advertising or cross-site tracking. You can block or delete cookies through your browser settings, or opt out of Google Analytics with the Google Analytics Opt-Out Browser Add-on.

Calculator inputs are processed locally

All calculator math runs in your own browser. The values you enter — dimensions, quantities, and prices — are not sent to MaterialSum's servers and are not stored by MaterialSum. When a calculation completes, a short, non-identifying analytics event is sent to Google Analytics that includes only the calculator name and a brief summary of the result (for example, "62 bags of 80 lb mix"). The specific measurements or prices you entered are never included.

Data we do not collect

MaterialSum does not require accounts and does not collect names, email addresses, or payment information. We do not sell or share personal data with third parties for marketing purposes.

Third-party services

Google Analytics is provided by Google LLC. Data collected through GA4 is processed according to Google's privacy policy. No other third-party services collect data on this site.

Policy updates

We may update this policy from time to time. Changes will be posted on this page with a revised "Last updated" date.

Contact

Questions about this policy? Email [email protected].