What time should I stop eating for 16:8 fasting?

Last reviewed · Jun 29, 2026 · Not medical advice
Quick answer

Pick an 8-hour eating window first, then stop eating when that window ends. A common example is 12 PM to 8 PM.

Step by step

01 Write down your start time.
02 Choose your target fasting hours.
03 Calculate the end time and plan your first meal.

The longer answer

Pick an 8-hour eating window first, then stop eating when that window ends. A common example is 12 PM to 8 PM. A fasting calculator is useful because most fasting questions are really time-window questions. Once the start and target duration are clear, the rest is just tracking.

Tip

Use a timer rather than redoing fasting math while hungry.

Common mistake

Guessing the end time and accidentally stretching or shortening the fast.

Track in the app

Track planned vs actual start and end times.

Safety note
Educational only. People who are pregnant, breastfeeding, under 18, have diabetes, take glucose-affecting medication, have a history of eating disorders, or feel unwell should speak with a qualified clinician before fasting.

Related questions

Free on the App Store

Stop googling. Start tracking.

Fast Goblin answers the timing questions automatically — end times, windows, and streaks in one place.