READY TO START FAST

0h 00m 00s

Metabolic Stage:

• 0–12 Hours: Blood sugar stabilizes, insulin drops, glycogen stores are gradually mobilized.

Online Intermittent Fasting Timer for 16:8, 18:6 & OMAD

16:8, 18:6, 20:4 & OMAD Protocols•Metabolic Stage Milestone Tracker•Elapsed Hours & Target Ring•Autophagy & Ketosis Education

Track Fasting Windows and Metabolic Milestones

Intermittent fasting alternates periods of eating with periods of fasting to lower baseline insulin, mobilize stored body fat, and trigger cellular cleanup through autophagy.

This fasting clock lets you track protocols like 16:8 (16 hours fasting / 8 hours eating) or OMAD (One Meal A Day). Watch your elapsed hours progress through key metabolic milestones: blood sugar stabilization, ketosis onset, and autophagy.

How to Use the Intermittent Fasting Timer

1

Choose your fasting schedule: 16:8 (popular), 18:6 (warrior), 20:4, or OMAD 23:1.

2

Click Start Fast after your final meal of the day.

3

Check the metabolic milestone indicator to see what cellular adaptations are occurring.

4

Break your fast mindfully with nutrient-dense whole foods when your target is reached.

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Frequently Asked Questions

What is the most popular intermittent fasting schedule?

The 16:8 protocol is the most popular and sustainable: fast for 16 hours (including sleep) and eat within an 8-hour window (e.g., 12:00 PM to 8:00 PM).

What can I consume during the fasting window?

Water, black coffee, unsweetened tea, and non-caloric electrolytes do not break a clean fast.

When does autophagy start during a fast?

Cellular autophagy typically initiates around 16 hours of continuous fasting and intensifies toward 24 to 48 hours.

Ready to Start Your Intermittent Fasting Timer?

Scroll up and press Start to begin your visual countdown immediately.