Privacy & cookies
Updated 14 November 2026. Operator: Jan Sławomir Zieliński. Privacy contact: wiater326@gmail.com.
Calculations and storage
Calculator inputs are processed locally in your browser. The application does not upload them to an application database, create accounts, or collect payment details. No calculator history is stored automatically. Copy and print functions run only when you request them. The tools themselves do not set optional preference or analytics cookies.
Hosting
Cloudflare Pages delivers this site and may process technical request data, including IP address, browser information and security logs. This processing supports service delivery and security, using the operator’s legitimate interests where applicable. Retention and international processing depend on Cloudflare’s service configuration. See Cloudflare’s privacy policy.
Google advertising privacy messaging
The Google AdSense tag is loaded to retrieve Google’s consent-management message where configured. This contacts Google and transmits technical request information such as IP address, page URL and browser information. Google’s CMP may use cookies or similar browser storage to record privacy decisions. The actual message lists applicable purposes and partners; review them before deciding. This site does not use Google Analytics. Advertising requests are deliberately paused, including after consent; installing the tag does not mean Google has approved this site or that ads are active.
For applicable visitors in the EEA, United Kingdom and Switzerland, the configured Google message should offer consent, refusal and detailed options. Use Advertising privacy settings in the footer to request a change or withdrawal. The message may be unavailable while configuration propagates, when scripts are blocked or outside its applicable targeting. A missing message is not treated as consent. All calculators remain free regardless of advertising choices. Google controls retention of its CMP records under its applicable framework; browser site-data controls can also clear stored records.
See Google’s privacy policy and how Google uses information from partner sites. Google and its partners may process data internationally under their applicable safeguards. Before ads are enabled, the actual published message and consent behaviour must be tested; this policy does not claim that configuration alone proves compliance.
Your rights and choices
Depending on applicable law, you may have rights of access, correction, deletion, restriction, portability, objection, withdrawal of consent and complaint to a supervisory authority. Contact the operator about information under their control. Withdrawing consent does not affect the lawfulness of earlier consent-based processing. External reference links have their own privacy practices.
Children and correspondence
The tools do not knowingly solicit personal information from children. Do not enter sensitive personal information. Contact the operator if you believe information was provided improperly. When you email us, the correspondence is processed to answer the request and retained as needed for that purpose and applicable obligations; request details for a specific correspondence.