Free engineering reference
Petroleum Engineering Calculators
PetroCalcHub works without account creation. This page explains what remains in your browser, what third-party measurement and ad services may receive, and what happens when you export a backup.
Saved calculations and custom equations are stored in your browser's local storage. PetroCalcHub does not require an account or upload that saved-work library to a PetroCalcHub database. Clearing site data, changing browsers, or losing a device can remove it.
PetroCalcHub uses Google Analytics and Vercel Analytics to understand visits, searches, calculator use, and site performance. Content measurement sends public article and tool identifiers, link clicks and successful-run events. It does not send calculation inputs, results, uploaded data or saved records. These services may also process device, page, referrer and approximate location information under their own terms and controls.
Google AdSense may display advertising and may use cookies or similar technologies to select, measure, and limit ads. Available consent and advertising controls can vary by location and browser settings.
After you follow an article link to a calculator, a small record in this tab’s session storage can connect the article to your first successful calculation for up to 30 minutes. It contains only public article and tool details and the click time. It is cleared after that success, an unrelated page visit, expiry, or closing the tab. Links opened in another tab are counted as clicks without this connection. This measures assisted use rather than proving the article caused it. Content measurement respects Global Privacy Control, Do Not Track and the Google Analytics opt-out setting, and the calculators work when analytics or browser storage is blocked.
A .petrocalc backup is created locally from the work already saved in your browser. You decide where to store or share that file. Anyone who receives it may be able to read and restore its calculation data, so review the file before sharing it.
You can use browser controls to clear local storage, block or delete cookies, or restrict tracking. Those choices can affect saved work, preferences, analytics, and advertising behavior.