Jet Lag Calculator
Estimate jet lag severity, recovery time, sleep adjustment, and travel fatigue based on origin and destination time zones.
Calculate Jet Lag
This jet lag calculator gives general travel guidance only. It is not medical advice. Travelers with health conditions should follow professional medical guidance.
Your closest matching time zone is selected by default when available.
Jet Lag Calculator
Use this jet lag calculator to estimate time zone difference, jet lag severity, recovery days, sleep adjustment tips, and travel fatigue between major cities and airports worldwide.