Legal
Privacy policy
Last updated: 07 August 2026
This policy explains what information hasibai.com collects when you use the site, why, and what control you have over it.
What the calculators collect
Nothing. Every calculation on this site runs locally in your browser. The figures you enter — including dates of birth, weight, height and financial amounts — are never transmitted to any server, never written to a database, and never retained after you close the page.
Information collected automatically
Like most websites, this one records standard technical information when a page is served: IP address, browser type and version, device type, the page requested, the referring page and the time of the request. This is used to keep the site working, diagnose faults and understand which calculators are being used.
Cookies
Cookies are small files placed on your device by a website. This site uses them for two purposes:
- Analytics — to count visits and see which pages are used, in aggregate. This does not identify you personally.
- Advertising — described in the next section.
You can block or delete cookies in your browser settings. Doing so will not affect any calculator on this site, because none of them require cookies to work.
Advertising and third-party vendors
This site displays advertising supplied by Google and other advertising partners.
- Google, as a third-party vendor, uses cookies to serve advertisements on this site.
- Google's use of advertising cookies enables it and its partners to serve advertisements to you based on your visits to this site and other sites on the internet.
- You may opt out of personalised advertising by visiting Google Ads Settings.
- You can opt out of personalised advertising from many other vendors at aboutads.info or the Network Advertising Initiative.
Third-party advertising vendors set their own cookies and are governed by their own privacy policies, which this site does not control.
Visitors in the European Economic Area and the UK
Where required, a consent notice is shown before any non-essential cookie is set, and you can decline or change your choice at any time. Under the GDPR you have the right to access, correct, delete or restrict processing of your personal data, and to object to processing or request portability. Because the calculators themselves store nothing, most such requests concern advertising and analytics data held by the relevant third-party vendor.
Visitors in California
Under the CCPA and CPRA you have the right to know what personal information is collected, to request its deletion, and to opt out of its sale or sharing. This site does not sell personal information. To exercise any of these rights, use the contact address below.
Children
This site is not directed at children under 13 and does not knowingly collect personal information from them. If you believe a child has provided personal information, please get in touch and it will be deleted.
External links
Some pages link to other websites. This policy applies only to hasibai.com, and no responsibility is taken for the privacy practices of any site you reach through a link here.
Changes to this policy
This policy may be updated from time to time. The date at the top shows when it was last revised, and material changes will be reflected there.
Contact
Questions about this policy or a data request: contact@hasibai.com