Work out intermittent fasting window instantly with clear inputs, formula shown and shareable results.
Splits the 24-hour day into the chosen eating window and the resulting fast, and spaces the meals across the window.
Time-restricted eating
Fasting hours = 24 - eating window; window closes at first meal time + window length
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
16:8 time-restricted eating is the most common, with early time-restricted eating showing the strongest metabolic signals.
Evidence favours an earlier window aligned with daylight over late-evening eating.