Privacy
Privacy information for the English pages of Kurashi Tools.
Entries used by calculators
Dates, years and text entered into a tool are processed locally in your browser. They are not submitted to our server for the calculation. If you use the Japanese personalization feature, a date of birth may be stored only in that browser's local storage until you remove it.
Analytics and advertising
We use privacy-oriented site analytics to understand aggregate page use and improve tools. If advertising is enabled, Google and its partners may use cookies or similar technologies subject to consent requirements and Google's policies. Advertising is not placed to imitate calculator controls or encourage accidental clicks.
External links and choices
Linked government and third-party sites apply their own privacy policies. Browser settings may be used to remove local storage or control cookies. Where consent is legally required, the applicable consent interface takes priority over optional advertising storage.