Privacy information

Calculator entries are processed on your device. You do not need an account to use these tools.

Calculator inputs and saved scenarios

The calculator code does not send your entries or results to a server. Scenario comparison keeps values in the current page’s memory and clears them when the page reloads or closes. Copying or printing a result uses your browser and device.

Cookies and measurement

The site does not set cookies or use analytics, advertising scripts or external font services. It does not save calculator inputs in browser storage.

Contact messages

If you email rubo8k@gmail.com, your email provider and the receiving email service process the message. The recipient receives your email address and any information you choose to include. Please send only the details needed to explain your question.

Hosting and external links

Delivering web pages requires the hosting service to process connection information, such as an IP address and the requested page. Links to sources open other websites, which have their own privacy practices.

Privacy questions and requests

Contact rubo8k@gmail.com about personal information you have sent by email. Depending on applicable law, you may request access, correction or deletion, restriction of processing, or object to processing. You may also raise a concern with your data protection authority.