Fasting Timer
Choose from popular intermittent fasting protocols (16:8, 18:6, 20:4) or set a custom schedule. The timer shows a 24-hour timeline visualization with your current phase, countdown to the next transition, and progress through your fasting or eating window.
Fasting Timer
Track your intermittent fasting windows with popular protocols or a custom schedule.
Frequently Asked Questions
Intermittent fasting (IF) is an eating pattern that cycles between periods of fasting and eating. It doesn't specify which foods to eat but rather when you should eat them. Common protocols include 16:8 (fast 16 hours, eat within 8), 18:6, and 20:4.
The 16:8 protocol is the most popular starting point — fast for 16 hours (including sleep) and eat within an 8-hour window (e.g., noon to 8 PM). Many people already fast 12+ hours overnight, so extending to 16 hours is a manageable adjustment.
Yes — water, black coffee, and plain tea (without milk, sugar, or sweeteners) are generally considered acceptable during the fasting window. Staying hydrated is important. Anything with calories will break your fast.
IF is generally safe for healthy adults, but it may not be suitable for everyone — particularly pregnant or breastfeeding women, people with a history of eating disorders, those with diabetes, or anyone on medications that require food. Consult your healthcare provider before starting any fasting protocol.