Last updated: October 2026.
Overview
Steel Rebar Calculator (RebarCalc) is a free set of browser-based calculation tools. There are no accounts, no sign-ups, and no forms that ask for your name or personal details. This policy explains what little data is involved when you use the site, and what our analytics and advertising partners collect.
Calculator inputs
The numbers you enter into a calculator — slab sizes, bar diameters, spacing, cover — are processed in your own browser to produce the result. They are not sent to our servers, stored in a database, or tied to your identity.
Server logs
Like almost every website, our hosting provider may record standard server logs when you visit: the page requested, the time of the visit, your browser type, and an IP address. These logs are used for security and for keeping the site running, and they are not used to identify individual visitors.
Cookies and analytics
We use Google Analytics (loaded through Google Tag Manager) to understand how the site is used — for example, which calculators are popular and which pages need improvement. Google Analytics uses cookies and may collect information such as the pages you visit, your device and browser type, and your approximate location. Google's use of this data is described in How Google uses information from sites that use our services.
You can opt out of Google Analytics with the Google Analytics opt-out browser add-on, or by blocking cookies in your browser settings (see "Controlling cookies" below).
Advertising
When advertising is displayed on this site, it is served by Google AdSense and its partners. Google and its partners may use cookies — including the DoubleClick cookie — to show ads based on your visits to this and other sites, and to measure how ads perform. You can control personalised advertising in Google Ads Settings, and find out more about interest-based advertising and how to opt out at aboutads.info.
Controlling cookies
You can delete or block cookies through your browser's settings. Blocking cookies will not stop the calculators from working, but it will opt you out of the analytics and personalised advertising described above. Each browser handles this differently — look under Privacy or Site Settings in your browser's preferences.
Third-party links
This site links to other websites, including standards bodies and supplier pages. Their privacy practices are their own, and this policy does not cover them. Please review the privacy policy of any site you visit through a link from here.
Children's privacy
This site is a general-audience engineering tool and is not directed at children under 13. We do not knowingly collect personal information from children.
Data security and retention
We do not hold personal data of our own — there is no user database to breach. Analytics data is held by Google under its own retention settings. Server logs are kept only as long as needed for security and site operation.
Changes to this policy
If this policy changes, the new version will be posted on this page and the "Last updated" date above will change. Significant changes will be noted here rather than emailed, since we hold no email addresses.
Contact
Questions about this policy can be sent through the Contact page.