CalcJoy doesn't require an account and doesn't ask for personal information. Calculations happen entirely in your browser.
What we store on your device
- Favorites, pinned, and recently used calculators (localStorage).
- Your theme preference (light, dark, auto).
- Optional per-calculator history for convenience.
This data never leaves your device. Clearing your browser storage removes it instantly.
Analytics
CalcJoy uses Google Analytics 4 to understand aggregate site usage (pages visited, which calculators are popular, basic device/browser info) so we can improve the product. We do not send Google Analytics any of the numbers you type into calculators, your inputs, or any personally identifiable information — only anonymous interaction events such as which calculator was viewed, copied, shared, favorited, or pinned. You can block analytics with any standard tracker-blocking extension.
Ads
If we add advertising in the future, we'll choose privacy-respecting providers and update this page first.
Contact
Questions? Email hello@calcjoy.app.
Last updated: June 2026.