Fasting Weight Loss Calculator

A fasting weight loss calculator estimates how your fasting schedule may impact your weekly progress based on your calorie deficit and consistency. For the full plan, visit our weight loss calculator guide and track everything with CaloriMate.

Examples

Realistic examples to set expectations:

• 16:8 fasting: You eat in an 8-hour window and fast 16 hours — many people find it easier to control snacking.
• 2 meals/day: Fewer meals can reduce total calories if portions stay reasonable.
• Best case: You keep protein high and calories controlled — weight trend drops steadily week by week.

Tips for Better Results

• Don’t “reward” the fast with huge portions in the eating window.
• Prioritize protein to control hunger and protect muscle.
• Track liquids (coffee add-ons, juices, sauces) — they sneak in calories.
• Watch your sleep — poor sleep increases cravings and water retention.

Continue Reading

Want the full guide and tools? See our Weight Loss Calculator pillar page.

• Weight Loss Simulator
• Free Weight Loss Tracker

Bonus: If you want better hunger control, see our Free Macro Counter App guide.

FAQ

Does fasting automatically cause weight loss?

Not automatically. Fasting helps many people eat fewer calories, but the total weekly calorie deficit is what drives fat loss.

What is the best fasting schedule for beginners?

Many people start with 12:12 then move to 14:10 or 16:8. Choose a schedule you can repeat consistently.

Can I fast and still eat carbs?

Yes. The key is total calories, protein, and portion control. CaloriMate helps you stay on track.