Evidence-based calculator
Intermittent Fasting Calculator
Find out exactly how many hours to fast — and what to expect at 30, 60, and 90 days — based on your body and goals.
Units:
1. Your details
35 years
1880
5′ 5″
Feet5 ft
4 ft7 ft
Inches5 in
0 in11 in
165.3 lbs
88 lbs440 lbs
143.3 lbs
88 lbs164.3 lbs
Target loss: 22 lbs
2. Choose your fasting protocol
Select a protocol below. Tap the arrow on any card to read more.