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Track your fasting window live, see the metabolic phase you are in, and log every fast with streaks.
About this tool
Track your fasting window live, see the metabolic phase you are in, and log every fast with streaks.
Intermittent Fasting Timer is a free health tool that runs entirely in your browser — nothing to install, no account to create, and your data never leaves your device. Open the page, add your input, and get a clean, copy-ready result in seconds.
Open Intermittent Fasting Timer on AltFTool — it loads instantly in your browser.
Add your input to the workspace.
Adjust the options until the result looks right.
Copy or download the output and put it to work.
A focused workspace for one-off content, data, or planning jobs — open it, use it, done.
Start with a rough input and iterate until the result matches exactly what you need.
Copy or download the output for your project, document, or daily workflow.
Yes — Intermittent Fasting Timer is completely free on AltFTool, with no signup, no trial limits, and no hidden costs.
Yes. Intermittent Fasting Timer runs in your browser, so what you enter or upload stays on your device instead of being sent to a server.
Track your fasting window live, see the metabolic phase you are in, and log every fast with streaks. It's built for quick, everyday health tasks with results you can copy or download straight away.
Yes — Intermittent Fasting Timer works in any modern browser, on desktop, tablet, and mobile, with the same features everywhere.