Fasting Calculators
Choose from our comprehensive suite of calculators to optimize your fasting journey.
Intermittent Fasting Calculator
Calculate your fasting and eating windows for different intermittent fasting protocols (16:8, 18:6, 20:4, OMAD).
Water Fasting Calculator
Estimate water intake, electrolyte needs, and weight loss during extended water fasts.
Calorie Restriction Calculator
Calculate your calorie needs during fasting periods and eating windows.
Weight Loss Projection
Project potential weight loss based on your fasting schedule and calorie intake.
Fasting Benefits Timeline
Visualize the physiological benefits that occur at different stages of your fast.
Fasting Schedule Planner
Create a personalized fasting schedule based on your lifestyle and goals.
How to Use Our Calculators
Our fasting calculators are designed to help you optimize your fasting practice. Each calculator focuses on a different aspect of fasting, from planning your fasting windows to projecting potential weight loss.
To get the most accurate results:
- Enter all requested information as accurately as possible
- Use consistent units of measurement (kg/lbs, cm/inches)
- Update your information regularly as your body changes
- Remember that calculators provide estimates, not exact predictions
For the best fasting experience, combine these calculators with our Fasting Timer and Tracking tools.