16:8 fasting timer
16 hours
16:00:00
A timer only. It does not give medical or diet advice.
How the 16:8 schedule works
With 16:8 you fast for 16 hours and keep your meals within the other 8 hours of the day. Many people finish dinner around 8 pm and eat again at noon the next day, so most of the fast happens during sleep.
Start the timer when you finish eating. The page shows the time left until 16 hours, the clock time when you reach it and when the next fast would start if you keep the same rhythm.
See your streak
Each completed fast is saved in your browser. The streak counts the days in a row when you reached 16 hours. There is nothing to sign up for and nothing leaves your device. This is a timer only; it does not give medical or diet advice.
Adjust the window to your day
Your 16 hours can start at any time. If you train in the morning, an earlier window such as 8 am to 4 pm may suit you better. Set the start time to the moment you finish your last meal and the timer does the rest.
Questions
What does 16:8 mean?
16 hours of fasting followed by an 8-hour window for meals, repeated every day.
When should I start the 16:8 timer?
Start it when you finish your last meal or snack. If you forgot, set the start time in the past.
Can I switch to 18:6 later?
Yes. Change the schedule on the fasting timer at any time; the current fast keeps its start time.