Calculation history
Recent calculations for the multi-mode tools are saved in local storage on your device.
A plain-language explanation of what stays on your device and what services the site uses.
This site aims to keep calculator use straightforward, but it is more honest to explain the moving parts clearly than to pretend nothing happens in the browser at all.
What stays in your browser
Some calculators offer recent history, favorites, or export-friendly records. That information is stored locally in your browser so it can be available when you revisit the page.
You control it
You can clear calculator history from the tool itself or clear browser data to remove it.
No account profile
The calculators do not require a user account, and the site does not ask you to sign in before calculating.
Third-party services in use
The site currently includes Google Analytics and Google AdSense scripts in the main app layout. Those services may collect usage or ad-related information according to their own policies.
Google Analytics
Analytics is used to understand page usage and navigation patterns. That means the site is not operating as a zero-tracking environment today.
Google AdSense
AdSense is included for advertising. Depending on configuration and consent requirements in your region, Google may process information related to ad delivery.
If you contact the site
If you send an email or message through an external profile, the information you include is used only to reply and troubleshoot the issue you reported.
The most useful bug reports include the calculator page, the exact inputs you entered, the result you saw, and what you expected instead. That makes it much easier to reproduce and fix calculation or UI issues.
Questions about privacy or data handling?
Use the contact page if you want clarification about local history, analytics, or the site setup.