This Privacy Policy explains what information PDGPT collects when you use this website, and what it does not collect. PDGPT is a free site with simple online calculators. The site is designed so that you can use every calculator without signing up, without creating an account, and without giving us personal information. Last updated: October 28, 2026.
Contents: Calculators · Contact form · Cookies · Advertising · Server logs · US state privacy · Canadian visitors · Links · Changes
Privacy Policy: Calculators and Your Numbers
Every calculator on PDGPT runs in your own browser. When you enter a number, such as a weight, a loan amount, or a grade, that number stays on your device. It is not sent to our servers, it is not stored by us, and it is not used to build a profile about you. We do not ask for your name, address, or payment details on any calculator page, and no calculator result depends on who you are.
This is a deliberate design choice. Because the tools are simple and the formulas are standard and published, there is no need for personal data. You can close the page at any time, and nothing about your calculation remains on PDGPT afterwards.
Privacy Policy: Contact Form
The only place where you may choose to give us personal information is the Contact PDGPT page. If you use that form, you will normally provide your name, your email address, a subject, and a message. That information is used only to read and reply to your message. PDGPT itself does not sell that information, PDGPT itself does not share that information for advertising, and it is not used to send you marketing messages, because PDGPT does not run a newsletter or a subscription service.
Please do not include passwords, bank details, or identity documents in a contact message. We never need such information, and you should not send it to any website that does not clearly need it.
Privacy Policy: Cookies
PDGPT shows a cookie notice when you first visit, so you can accept cookies, reject them, or change the settings. Cookies are small files stored in your browser. On this site they are used for basic functions, such as remembering your cookie choice and keeping the site working correctly. PDGPT itself does not use cookies to track you across other websites, and it does not sell cookie data. If advertising is enabled in the future, advertising partners may use cookies as described in the Advertising section below, and only as allowed by your cookie choice.
Some standard WordPress functions, such as the admin login used by the site owner, use their own cookies. Those cookies are for site administration only and are not used to collect visitor information from calculator pages. You can delete or block cookies in your browser settings at any time, although some site functions may then work less smoothly.
Privacy Policy: Advertising
No advertising is running on PDGPT at the time of this update. This section explains what will happen when advertising is enabled, so the policy stays accurate on that day.
When advertising is enabled, third-party vendors, including Google, will use cookies to serve ads based on your prior visits to this website and other websites. Google’s advertising cookies enable it and its partners to serve ads to you based on your visit to this site and other sites on the Internet.
You can opt out of personalized advertising by visiting Google Ads Settings. You can also opt out of a participating vendor’s use of cookies for personalized advertising by visiting aboutads.info.
Advertising partners may collect and use information as described in their own policies. PDGPT does not give advertising partners your contact-form information.
Privacy Policy: Server Logs and Security
Like most websites, the hosting server for PDGPT may record basic technical information when a page is requested, such as the page visited, the time of the visit, and general browser information. This information is used only to operate the site, fix errors, and protect it from abuse. It is kept only as long as needed for those purposes and is not used to identify individual visitors or to follow them elsewhere.
PDGPT does not run user accounts for visitors, does not offer comments on tool pages, and does not collect location data from your device. If a feature is added in future that changes this policy, this page will be updated first, and the change will be described here in plain language.
Privacy Policy: US State Privacy
PDGPT does not sell your contact-form information, and it does not share that information for cross-context behavioral advertising. If you are a California resident, you have rights under California law, including the right to know what personal information is collected, the right to ask for deletion of personal information you provided through the contact form, and the right to opt out of the sale or sharing of personal information.
Because PDGPT does not sell contact-form information, and because advertising is not currently running, there is currently no sale or sharing of your personal information by PDGPT to opt out of. If advertising is enabled, use the opt-out choices in the Advertising section above. You may also send a request titled “Do Not Sell or Share My Personal Information,” or a request to delete contact-form information, through the Contact PDGPT page, and PDGPT will reply to that message.
Other US states give residents similar rights to know, delete, and correct personal information they provided. The same contact route applies for those requests.
Privacy Policy: Canadian Visitors
Canadian visitors have rights under Canadian privacy law, including the right to ask what personal information PDGPT holds about them and to ask for a correction. PDGPT holds almost no visitor information: calculator numbers stay in your browser, and the only personal information PDGPT may hold is what you choose to send through the contact form. To ask about, correct, or request deletion of a contact message, use the Contact PDGPT page. If advertising is enabled, the Advertising section above explains how advertising cookies are used and how to opt out.
Privacy Policy: Links to Other Websites
Some PDGPT pages link to outside sources, such as reference articles about formulas. Those websites have their own privacy policies, and PDGPT is not responsible for them. When you follow an outside link, please read that site’s policy if you are concerned about your data. For general background on privacy policies, see Wikipedia’s article on privacy policies.
Privacy Policy: Changes and Questions
This Privacy Policy was last updated on October 28, 2026. It may be updated from time to time to reflect changes in the site or in the law. The current version is always the one on this page. If you have a question about this policy, or about a message you sent through the contact form, please use the Contact PDGPT page. You can also read the About PDGPT page for a plain-language description of the site, and return to the PDGPT homepage to use the free calculators.