About Fasting Windows
Fasting Windows is a free intermittent fasting calculator. Choose 16:8, 18:6, 20:4, OMAD, or a custom fast, set when you start eating, and see today’s eating and fasting windows with a live countdown.
Fasting Windows is a free intermittent fasting calculator for planning daily eating and fasting windows. Pick a protocol (16:8, 18:6, 20:4, OMAD, or custom hours), set when your eating window starts, and get a clear schedule with a countdown to the next change. Built for anyone trying intermittent fasting who wants a simple, no-signup window timer — not medical advice, just schedule math.
