Privacy Policy
What this site collects, what it does not, and the third parties involved.
The short version
This site does not ask for, collect or store any personal information. The numbers you type into the calculator never leave your device. There is no account system, no newsletter and no contact form storing what you write.
Two things do involve third parties: anonymous traffic analytics, and — once enabled — advertising. Both are described below.
Data stored on your device
The site stores two small preferences in your browser's local storage so it can remember them between visits:
- Your chosen interface language.
- Your chosen decimal separator (dot or comma).
These never leave your browser and are not readable by this site's operator. Clearing your browser data removes them.
Analytics
The site uses Vercel Web Analytics to count page views. It is cookie-free and does not build a profile of you or track you across other websites. It records aggregate information such as the page visited, the referring site, the country, and the browser and device type.
No IP addresses are stored in a form that identifies an individual visitor.
Advertising and cookies
This site may display advertising served by Google AdSense. When advertising is active, the following applies:
- Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites.
- Google's use of advertising cookies enables 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 personalised advertising by visiting Google's Ads Settings at adssettings.google.com.
- You can opt out of third-party vendor cookies more broadly at aboutads.info/choices or youronlinechoices.eu.
- Some third-party vendors may use the DoubleClick DART cookie or similar identifiers, which are governed by their own privacy policies.
Visitors in the European Economic Area, the United Kingdom and Switzerland are shown a consent message before any personalised advertising cookie is set, and personalised ads are only served where consent has been given.
Your rights
Because no personal data is collected or held by this site, there is generally nothing to access, correct or delete. If you believe otherwise, or you want to exercise a right under the GDPR, the LGPD or the CCPA, write to the address on the contact page and it will be handled within the statutory period.
Children
This site is not directed at children under 13 and does not knowingly collect information from them.
External links
Pages here link to other calculators and to third-party references. Those sites have their own privacy policies, and this one does not cover them.
Changes to this policy
If this policy changes — for example when advertising is switched on — the revised version will be published on this page with a new date at the top. Continuing to use the site after a change means accepting the revised policy.