Privacy Policy
Last updated: March 5, 2026.
Core data handling
MasterCalcs is a static site. Calculations run in your browser. We do not require user accounts and do not maintain a user database for calculator inputs.
Local storage features
Optional features such as saved scenarios or compare lists use browser localStorage on your device. This data remains local unless you copy/share it yourself. Do not store sensitive personal information in labels or notes.
Server logs
Like most websites, hosting infrastructure may record technical request data (for example, IP address, user agent, and requested URL) for security and operational monitoring.
Cookie policy
At this time, MasterCalcs does not require a full CMP because ads and analytics consent workflows are not active by default. If ad/analytics tooling is enabled in the future, this policy and consent UX will be updated accordingly.
Third-party links
Some pages may include external references or affiliate links. Those sites operate under their own privacy policies.
Contact
Privacy questions: hello@mastercalcs.com