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Jet Lag Calculator

Estimate jet lag recovery time and get personalized tips based on time zone difference, direction of travel, and departure time.

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About Jet Lag

Jet lag occurs when your internal body clock (circadian rhythm) is out of sync with the local time at your destination. Symptoms include fatigue, insomnia, difficulty concentrating, digestive issues, and mood changes. The general rule is that it takes about 1 day to recover for every 1.5 hours of time zone change. Light exposure is the most powerful tool for resetting your circadian rhythm.

How to Use Jet Lag Calculator

1

Enter your values

Open Jet Lag Calculator and enter the values you want to calculate or convert.

2

Select units or options

Choose the input and output units, formats, or calculation parameters.

3

View results instantly

Results are calculated in real-time as you type — no submit button needed.

4

Copy or use the result

Copy the calculated result or use it directly in your work.

Frequently Asked Questions

Jet Lag Calculator is a free online calculations tool. Estimate jet lag recovery time and get personalized tips based on time zone difference, direction of travel, and departure time.