Water Fasting Calculator
Current Weight (kg)
Please enter a valid weight.
Height (cm)
Please enter a valid height.
Age (years)
Please enter a valid age.
Gender
Male
Female
Fasting Duration (days)
Enter a duration between 1 and 30 days.
Activity Level
Sedentary (little/no exercise)
Light (1-3 days/week)
Moderate (3-5 days/week)
Active (6-7 days/week)
Calculate
Results
BMR
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Total Calories Burned
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Estimated Weight Loss
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Water Intake Recommendation:
Formula:
BMR calculated using Mifflin-St Jeor equation, then multiplied by activity factor to get TDEE. Weight loss assumes ~7700 kcal per kg of fat.