✈️ Travel
Calculator
Jet Lag Calculator
Plan your itinerary around your body clock.
How to Use This Tool
- Enter the number of time zones you crossed.
- Enter your flight duration.
- Get estimated recovery time and fatigue level.
The Formula
Approx. 1 day recovery per time zone crossed, plus extra for flights over 6 hours.
Why It Matters
You fly from New York to Tokyo, crossing 13 time zones eastward. Expect severe jet lag with approximately 13 days to recover. Start shifting your schedule 3 days before departure to ease the transition.
Recent Activity
No recent calculations