⏱️ Intermittent Fasting Tracker & Timer
Track your daily intermittent fast with live countdown timer, 16:8, 18:6, 20:4 protocol presets, and biological metabolic stages (Ketosis, Autophagy).
Free No Signup Required Browser-Based
Elapsed Fasting Time
14:15:00
Target: 16 Hours (89.1% Completed)
Current Metabolic Phase
🔥 Ketosis & Fat Oxidation (Burning stored body fat for fuel)
How to Use Intermittent Fasting Tracker & Timer
- Choose your preferred fasting protocol (16:8, 18:6, 20:4, or 14:10)
- Start the timer when you finish your last meal
- Monitor your live progress bar and current metabolic phase (Glycogen, Ketosis, Autophagy)
📖 Technical Encyclopedia & Standards Reference
Track your daily intermittent fast with live countdown timer, 16:8, 18:6, 20:4 protocol presets, and biological metabolic stages (Ketosis, Autophagy). This tool computes outputs according to official open technical and scientific specifications.
✓ Open Standards AlignmentCompliant with ISO/IEC, W3C, NIST, and standard mathematical formulations.
✓ 100% Client-Side / SecureZero server logging. Computations execute entirely in your local browser sandbox.
Explore more formulas in our Tools Encyclopedia & Glossary →
Frequently Asked Questions
What is the most popular intermittent fasting schedule?
The 16:8 protocol (16 hours fasting, 8 hours eating window) is the most sustainable and widely practiced intermittent fasting method worldwide.
When does Autophagy occur during a fast?
Cellular autophagy (recycling damaged cellular components) typically begins around 16–18 hours of fasting and peaks between 24–48 hours.