Intermitted Fasting Time Calculator
Calculate the hours when the intermittent fasting cycle ends with a simple fasting clock.
Calculate the next meal time
Enter the time of your last meal and select the duration of your fast in hours. The calculator will directly display the time of your next meal.
Weight Loss Conversion Table
Use the weight loss with intermittent fasting days conversion tables below to estimate weight loss based on the number of fasting days. Calculate your results to see the expected weight loss in both kilograms and pounds.
Fasting Days to Weight Loss (kg)
Fasting days | Weight loss (kg) |
---|---|
1 day | 0.5 - 1.0 kg |
2 days | 1.0 - 2.0 kg |
3 days | 1.5 - 3.0 kg |
4 days | 2.0 - 4.0 kg |
5 days | 2.5 - 5.0 kg |
6 days | 3.0 - 6.0 kg |
7 days | 3.5 - 7.0 kg |
Fasting Days to Weight Loss (lbs)
Fasting days | Weight loss (lbs) |
---|---|
1 day | 1.1 - 2.2 lbs |
2 days | 2.2 - 4.4 lbs |
3 days | 3.3 - 6.6 lbs |
4 days | 4.4 - 8.8 lbs |
5 days | 5.5 - 11 lbs |
6 days | 6.6 - 13.2 lbs |
7 days | 7.7 - 15.4 lbs |
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Frequently Asked Questions
We've compiled the answers to the most common questions below. If your question isn't covered, or you need more info, or have feedback, please contact us.
What is intermittent fasting?
Some benefits include weight loss, improved metabolic health, protection against disease, and increased lifespan.
Intermittent fasting methods
16/8 method
Choose an 8-hour window for eating, such as 12:00PM to 8:00PM.
Fast for 16 hours, such as from 8:00PM to 12:00PM on the next day.
Choose a day to fast entirely, such as Monday. The next day you eat normally.
5:2 methodEat normally for five days a week. Limit caloric intake to 500-600 calories for two days of the week.
Is intermittent fasting safe?
Can I exercise and drink fluids during intermittent fasting?
What are good sources to read about intermittent fasting?
- Varady, K. A. (2011). Intermittent versus daily calorie restriction: which diet regimen is more effective for weight loss?. Obesity reviews, 12(7), e593-e601.
- Fasting and refeeding differentially regulate NLRP3 inflammasome activation in human subjects published on Journal of Clinical Investigation
- Intermittent Fasting: Is the Wait Worth the Weight? Mary-Catherine Stockman, RD, LDN,1 Dylan Thomas, MD,1 Jacquelyn Burke, MS, RD,2 and Caroline M. Apovian, MD1
- Patterson, R. E., Laughlin, G. A., Sears, D. D., LaCroix, A. Z., Marinac, C. R., Gallo, L. C., ... & Villaseñor, A. (2015). INTERMITTENT FASTING AND HUMAN METABOLIC HEALTH. Journal of the Academy of Nutrition and Dietetics, 115(8), 1203-1212.
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