TDEE Calculator calculates in your browser. You do not need an account to use the tools.
Calculator inputs
We do not send your calculator fields to an application server. If you opt in to remembering your details, they are stored in localStorage on this browser. Turning off the option removes that saved profile. Browser storage is not encrypted and can be read by anyone with access to this browser profile.
Your progress journal
Journal entries are saved in this browser's localStorage when you press Save check-in. They are not synchronized between devices. You can export them to CSV or delete all entries from the journal. Clearing browser storage can remove your records.
Sharing results
Only when you choose to share a result are the calculator inputs included in a URL. Anyone with that URL can read them. The URL can appear in browser history, hosting request logs and the systems through which you share it. Shared-result pages are marked noindex, which is not access control or a guarantee of privacy.
Cookies, analytics and advertising
This release includes no advertising scripts, third-party analytics or marketing cookies. The hosting service may use infrastructure, security or authentication cookies and retain routine request logs such as IP address, URL and time. Those hosting functions are separate from the calculator's local storage.
External resources
The interface uses system fonts and assets served from this site. Source links open external websites only when you select them. Their own privacy policies apply.
Remove local data
Uncheck “Remember my details” to remove the saved profile. Use “Delete journal” to remove journal entries. You can also clear this site's storage through your browser settings.
Your working tab and undo history
Valid calculator details are kept in sessionStorage while this tab is open, so they follow you when switching tools or languages. Closing the tab clears this working copy. The optional Remember setting keeps a separate persistent profile. Removed journal entries are held in this tab’s undo history until restored or the tab closes; deletion can be undone while that history is available.