Intermittent Fasting Timer - Free Online Fasting Period Tracker

Intermittent Fasting Timer

Track your fasting and eating windows

Select Fasting Protocol
16:8

16h fast, 8h eat

18:6

18h fast, 6h eat

20:4

20h fast, 4h eat

Fasting Benefits Timeline

12 Hours

Your body enters the fasted state. Fat burning begins.

14-16 Hours

Autophagy (cellular repair) begins to ramp up.

16-18 Hours

Fat burning increases. Ketone production rises.

18-20 Hours

Human Growth Hormone (HGH) increases significantly.

20-24 Hours

Maximum autophagy benefits. Peak fat burning.

Tips for Successful Fasting

  • Stay hydrated with water, black coffee, or unsweetened tea
  • Start with shorter fasting windows and gradually increase
  • Break your fast with easily digestible foods
  • Listen to your body and stop if you feel unwell
  • Consult your healthcare provider before starting any fasting protocol