Calculate expected jet lag severity and recovery time based on the number of time zones crossed, direction of travel, and your age.
Enter your values below
Number of time zones you will cross.
Eastbound travel typically causes more jet lag.
Recovery time may increase with age.
How this calculator works
Estimates recovery duration using the rule of thumb that eastward travel causes more jet lag than westward, and recovery time increases with age.
Common questions about this calculator
These calculators are for informational purposes only. While we strive for accuracy, results should not be used as the sole basis for important decisions.
