Know when you want to eat? Work backwards. Enter your target mealtime and fast length to find out exactly when to stop eating.
Stop eating at —
Why work backwards: most fasting advice starts with 'stop eating at X' — but your life runs on mealtimes, not start times. Anchoring on the meal you care about (lunch with colleagues, dinner with family) makes the fast fit your day instead of fighting it.
The social trick: pick the mealtime you'd miss most and protect it. Everything else is negotiable — the protected meal is what makes the rhythm repeatable.
Shift the whole window together — keep the length constant and slide it. Bodies adapt to consistent lengths faster than consistent clock times.
Yes — 16 on weekdays, 14 on weekends is a common sustainable mix. Just keep each day's plan decided in advance.
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Open in Fluent Fast →More calculators: 16:8 · 18:6 · 20:4 · OMAD · Fast end time · Eating window
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