🧮 Free tool

Timezone converter : calculate time difference between 2 cities

Timezone converter between Paris and 200+ world cities. Computes current time, estimated jet lag, recovery period.

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Acclimatisation: 1 day per time zone

7h shift? Plan a week to recover. Going west is easier (longer day).
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Force daylight on arrival

Day one: maximum outdoor daylight, meals at local times. Avoid napping before 2pm local.
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Melatonin for short transmeridian trips

0.5 to 1 mg, 30 minutes before local bedtime, D-1 to D+3. OTC in most countries.

FAQ

Timezone FAQ

Does the tool handle daylight saving time? +

Yes, summer/winter time transitions are handled automatically for relevant countries.

What about double jet lag (long stopover)? +

Count the final shift, not the stopover's. If the stopover exceeds 12h, treat it as its own leg.

Mathieu D. ✓

Luxury & gastronomy expert

Luxury expert.