Calculate your intermittent fasting schedule, eating windows, and fasting periods. Free online IF calculator for weight loss and health.
Calculate your personalized intermittent fasting schedule, optimal eating windows, and fasting periods. Plan your IF routine for weight loss, health benefits, or lifestyle optimization.
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Intermittent fasting is an eating pattern that cycles between periods of fasting and eating, focusing on when you eat rather than what you eat.
Fasting is voluntary and controlled, while starvation is involuntary. Fasting can be stopped at any time.
During fasting, your body switches from using glucose to using stored fat for energy, producing ketones.
Extended fasting periods may trigger autophagy, a cellular cleanup process that removes damaged cells.
This calculator provides general recommendations for educational purposes only and should not replace professional medical advice. Intermittent fasting may not be suitable for everyone, including pregnant women, people with eating disorders, those with certain medical conditions, or individuals taking specific medications. Always consult with a healthcare provider before starting any fasting regimen, especially if you have diabetes, low blood pressure, or other health concerns.
Intermittent fasting 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 methods include 16:8, 18:6, and 5:2 fasting.
The duration depends on your goals and experience. Beginners often start with 12-14 hours, while more experienced fasters may do 16-20 hours. The 16:8 method (16 hours fasting, 8 hours eating) is popular for weight loss.
Yes, you should drink plenty of water during fasting periods. You can also have black coffee, tea, and other non-caloric beverages. Avoid drinks with calories, sugar, or artificial sweeteners.