🌿 Free Fasting Tool
Intermittent Fasting
Calculator
Calculate your ideal fasting & eating windows, get a personalized daily schedule, and discover which IF protocol fits your goals.
Step 1 — Choose Your Protocol
16:8
Fast 16 hrs, eat 8 hrs
⭐ Most Popular
18:6
Fast 18 hrs, eat 6 hrs
Intermediate
20:4
Warrior Diet — 4 hr window
Advanced
OMAD
One Meal A Day
Expert
14:10
Great for beginners
Beginner
12:12
Gentle overnight fast
Entry Level
Step 2 — Set Your Schedule
Step 3 — Your Primary Goal
Weight Loss
Muscle Gain
More Energy
Longevity
✅ Your Personalized Plan
Your Fasting Schedule
16:8
Protocol
🚫 Fasting Window
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✅ Eating Window
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% Day Fasting
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Meals Suggested
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Ketosis Entry
📅 Today’s Schedule