16:8 Intermittent Fasting Timer

The 16:8 protocol is the most beginner-friendly form of intermittent fasting: fast for 16 hours and eat during an 8-hour window. If you stop eating at 8 PM, your eating window opens again at noon the next day. Most of the fasting hours overlap with sleep, so in practice you are only consciously skipping food for 4–6 waking hours. This timer removes all the mental arithmetic — enter when you last ate, hit Start, and you see a live countdown to your next meal, the exact time your eating window opens, and when it closes again. Your schedule saves locally in your browser with no account required.