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Intermittent Fasting Timer & Tracker

Track intermittent fasts — 16:8, 18:6, 20:4, OMAD or custom — with a live timer, eating-window times, fasting stages and a history saved in your browser.

For general information only — not medical advice. Results are estimates; talk to a doctor or qualified health professional about your own health.

How to use

  1. 1Choose your plan and press Start fast (or set when you last ate).
  2. 2Watch the progress ring; press End fast when you eat. Your history stays in this browser.

Frequently asked questions

What does 16:8 mean?

Fast for 16 hours and eat within an 8-hour window — for example, eat between noon and 8 pm.

Is my data saved?

Yes, in this browser only (local storage). Nothing is sent to a server.

Is intermittent fasting safe for everyone?

No — it isn't advised for people who are pregnant, have diabetes, a history of eating disorders or other medical conditions. Ask a doctor first.