What is a fasting calculator?

This fasting calculator helps you determine when your next meal should be based on when you last ate and how long you want to fast. It supports intermittent fasting routines like 16:8, 18:6, and OMAD (One Meal A Day).

How do I use this tool?

Answer the question "What time did you have your last meal?" and then choose a fasting split from the dropdown. If none of the preset splits match your routine, select Custom to enter your own fasting duration. The tool will calculate your next meal time based on your local time zone.

Is it simple, free, and private?

No logins, no trackers. Your fasting times are stored only on your device. Just bookmark this page and use it whenever you need to plan your next meal.

How can a fasting calculator help manage my fasting schedule?

By automating time calculations, the fasting calculator helps maintain a consistent fasting window. It’s a convenient solution for anyone following an intermittent fasting plan.

What does 16:8 mean in intermittent fasting?

The term "16:8" refers to fasting for 16 hours followed by an 8-hour eating window, one of the most common intermittent fasting schedules.

Can I customize my fasting duration?

Yes, the fasting calculator allows you to select a custom fasting duration if the preset options do not fit your routine.

How accurate is the fasting calculator?

Using simple 24-hour time arithmetic, the calculator offers a reliable method to plan your meal times based on your input.

What scientific evidence supports intermittent fasting?

Intermittent fasting has been the subject of extensive research. Several studies have investigated the effects of fasting on metabolism, cellular repair, and overall wellness. For example:

• PubMed Study 31614992
• PubMed Study 36121082
• JCI Research Article
• PMC Article PMC5959807

Please note that this calculator is for scheduling purposes only and does not offer personalized health advice. Always consult a healthcare professional for questions regarding diet or fasting practices.