ClutchCalcs

Health

Intermittent Fasting Schedule Calculator

Pick your protocol and starting hour — get your fasting and eating windows mapped out.

Eating window

Last meal by
Fast hours
Fast starts

FAQ

Does IF work for weight loss? +
Mostly by creating a calorie deficit via a shorter eating window. Total calories still matter most.
Best protocol for beginners? +
16:8 is the easiest entry point — skip breakfast, eat noon to 8pm.