Jet Lag Calculator
Estimate jet lag severity and recovery time based on timezone changes, travel direction, and flight duration.
Inputs
hrs
hrs
hours
Results
Jet Lag Severity
Significant
Timezone Difference6 hours
Estimated Recovery9 days
Arrival Local Time8:00
Your Body Clock Time2:00
Sleep StrategyTry to sleep earlier a few days before departure
Light Exposure TipSeek morning light at destination, avoid evening light
How to Use This Calculator
- Enter your Departure Timezone (UTC offset, e.g., -5 for EST, 0 for GMT).
- Set the Arrival Timezone (UTC offset, e.g., 1 for CET, 9 for JST).
- Select Travel Direction (eastward or westward) — eastward travel typically causes worse jet lag.
- Enter the Departure Time (24h) and Flight Duration in hours.
- Review Jet Lag Severity, Recovery Days, Arrival Local Time, Your Body Clock Time, and the recommended Sleep Strategy.
Ad Placeholder
Related Calculators
Travel Budget Calculator
Estimate your total trip cost including flights, accommodation, food, transport, and activities. See a breakdown per person and per day.
Vacation Days Calculator
Track your PTO balance, see how many vacation days you have left, and plan how to use them. Calculate the monetary value of your remaining days.
Currency Exchange Calculator
Convert between major world currencies using live exchange rates. See exchange rates and comparison tables for 12+ currencies.
Ad Placeholder