Estimate jet lag recovery days from time zones crossed.
The body adapts roughly one day per full time zone, and more slowly when traveling east against the clock. Planning recovery days avoids scheduling meetings or drives while the internal clock is still misaligned.
Jet Lag Adjustment
Recovery days ~ time zones x 0.75 (east) or x 0.5 (west)
Recovery days ~ time zones x 0.75 (east) or x 0.5 (west) The body adapts roughly one day per full time zone, and more slowly when traveling east against the clock.
Planning recovery days avoids scheduling meetings or drives while the internal clock is still misaligned.
This calculator takes 2 inputs: Time zones crossed, Direction. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.