Last updated: 2026-08-21
The short version
Your calculations never leave your device. Every calculator on this site runs in JavaScript in your browser — the numbers you type are not transmitted to us, not logged and not stored. We could not retrieve them if we wanted to.
What we do collect
- Standard server logs — IP address, browser type, referring page and the URL requested, retained briefly for security and abuse prevention.
- Aggregate analytics — which pages are popular, in aggregate. We do not build profiles of individual visitors.
- Local storage — your light/dark theme preference is stored in your own browser and never sent to us.
Advertising
This site is funded by advertising. Third-party vendors, including Google, use cookies to serve ads based on prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this site and other sites on the internet.
You may opt out of personalised advertising by visiting Google Ads Settings, or opt out of third-party vendor cookies at aboutads.info. Visitors in the EEA, UK and Switzerland are asked for consent before personalised advertising cookies are set.
Your rights
Under the GDPR you have the right to access, correct, delete or restrict processing of your personal data, and to object to processing and request portability. Under the CCPA, California residents may request disclosure or deletion of personal information and may opt out of its sale — we do not sell personal information. To exercise any right, contact hello@calcura.online.
Children
This site is not directed at children under 13 and we do not knowingly collect personal information from them.
Changes
If this policy changes materially, the date at the top of the page is updated. Continued use of the site after a change constitutes acceptance of the revised policy.