Question 1

What is a Jet Lag Calculator?

Accepted Answer

Jet lag is a temporary circadian rhythm disruption from rapid travel across time zones. The internal clock — regulated by light — takes time to sync with the new local time.

Question 2

How does the Jet Lag Calculator work?

Accepted Answer

Typical recovery: ~1 day per time zone crossed Then: Eastward travel (phase advance) is harder than westward Then: Melatonin at local bedtime helps reset the clock Then: Morning light exposure at destination speeds adaptation.

Question 3

Can you give an example of how to use the Jet Lag Calculator?

Accepted Answer

Example: Input London → Tokyo (9 time zones east) gives a result of Recovery ≈ 9–12 days; take 0.5–5mg melatonin at local bedtime for 5 nights.

Question 4

Is the Jet Lag Calculator free to use?

Accepted Answer

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

Question 5

How accurate is the Jet Lag Calculator?

Accepted Answer

Our Jet Lag Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Jet Lag Calculator

Jet Lag Calculator

What is Jet Lag Calculator?

How to Use Jet Lag Calculator

Example Jet Lag Calculator

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