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Jet Lag Recovery Time Calculator

Recovery ≈ 1 day per time zone crossed (eastward is harder).

Estimates jet lag severity and approximate recovery time from time zones crossed and direction of travel (eastward vs westward).

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Recovery_days ≈ zones × factor; east→1.5 days/zone; west→1.0

In depth

Estimates jet lag severity and approximate recovery time from time zones crossed and direction of travel (eastward vs westward).