Privacy & analytics controls
Local calculations; separate optional analytics.
Measurements stay local
Our calculator code does not upload inputs or reports. Optional Save uses localStorage on this browser. Other shared-device users may see it. The report can clear saved worksheets; exports are local downloads.
Automatic analytics
The owner-selected default loads Google Tag Manager GTM-P9R5XN3X unless you opt out or send Global Privacy Control or Do Not Track. This default is not visitor consent. Our initialization denies advertising storage, ad user data and ad personalization. Use persistent footer controls to turn analytics off; the reload stops future loads, not previously transmitted data.
The remote container can change and may contain automatic interactions, form measurement or personal-data detection. We do not claim page-view-only analytics. Do not enter personal information. Google receives network, browser and page information under its policies. Our code sends no calculator events.
Hosting
Server and CDN services process request metadata such as IP address and user agent. No anonymous/no-logs claim. Privacy signals prevent our Google loading, not ordinary hosting requests. No accounts, uploads, checkout or printer connection.