Privacy
Updated November 1, 2026
Calculations stay on your device
When you press Calculate, the arithmetic runs locally in your browser. The numbers you type into a calculator are not sent to Numelivo, are not written into the page address, and are not stored by the site by default.
Hosting logs
The site is static and is meant to be hosted on a service such as Cloudflare Pages. The host can keep ordinary technical logs, which typically include the IP address, the time, the requested address, and the browser identification string. Those logs are the host’s records, used to run and protect the service. We do not use them to build a profile of what you calculated.
What is stored in the browser
If you choose a light or dark theme, that choice is saved in local storage under the key numelivo-theme so the next visit can match it. That key does not contain calculator inputs. You can clear it in your browser.
There are no accounts and no analytics on this version of the site. We do not sell personal information. If that changes, this page will be updated before the change.
Contact
Privacy questions can be sent to the contact address in the footer. This policy is a draft pending lawyer review. It is not a complete notice for every jurisdiction.