A concrete or gravel calculator only needs one thing from you: a length, a depth, a bag price, whatever the field asks for. Here is exactly where that number goes, what the site logs just from a visit, and how the contact form and the ads are handled.
Punch a dimension or a price into any tool on this site and the math runs right there in your browser tab, in JavaScript, with no round trip to a server. There is nowhere for that figure to go: the calculators do not save an account, submit a form, or write to a database, so a slab length or a bag price you type in disappears the moment you close or refresh the tab. Nobody on our end ever sees the number you entered.
Visiting any page here generates the same basic web log every site produces: which page loaded, a rough location guessed from your IP address, your browser and device, and whatever site sent you here. None of that log connects to a specific calculator input, and we use it only to spot which pages are getting slow, broken, or ignored.
Google Analytics and Google AdSense both run here, and both set cookies. Analytics rolls visits up into aggregate counts, so we can see that the gravel tool got more traffic this week without knowing who ran it. AdSense cookies can carry browsing history from other sites into the ads you see; the banner on this site lets you reject that, and Google's own account settings let you turn off ad personalization everywhere. None of the calculators check a cookie before returning a result, so rejecting them changes nothing about how the tools work.
Messages sent through the contact form route through Web3Forms, a third-party form processor. Whatever you send, usually a flagged yield figure or a broken page report, gets used to reply to you and to check the number, and for nothing beyond that. We do not build a mailing list from it and we do not hand it to anyone else.
A calculator or guide page sometimes links out to a supplier, a retailer, or a contractor-quote service, and some of those are affiliate links, Amazon Associates included; buying through one can earn us a commission at no cost to you. Once you click through, the destination site's own cookie and privacy rules apply, not ours. Ads on this site come from Google AdSense; Google's own advertising policy covers how it uses data across every site that runs its ads.
This is a planning tool for adults working on a real project, not a service aimed at children, and we do not knowingly collect anything from anyone under 13. If the data picture here changes, a swapped analytics tool, a new ad network, a different form processor, this page and its date at the top change with it. There is no separate email notice, since the only address we ever hold is one you typed into the contact form yourself.