Jet Lag Calculator
Estimate jet lag severity and recovery time
🔒 Files never leave your browser
How to Use Jet Lag Calculator
Select timezones
Choose origin and destination timezones.
Calculate
See timezone difference and jet lag severity.
Tips
Get recovery tips and adjustment schedule.
Why Choose AllTools Jet Lag Calculator?
- ✓ Severity rating
- ✓ Recovery estimate
- ✓ Adjustment schedule
- ✓ Direction-aware
- ✓ Sleep tips
- ✓ No data stored
Why Use This Tool
- ★ Your travel data stays private in your browser
- ★ Completely free with no usage limits
- ★ No account or registration required
- ★ Useful for planning trips and travel logistics
- ★ Works on any device including mobile while traveling
Related Resources
Frequently Asked Questions
How long does jet lag last? ▼
Generally 1 day per timezone crossed. Eastward travel is typically harder to adjust to.
Is eastward or westward travel worse? ▼
Eastward travel is generally harder because you lose time and must advance your sleep schedule.
Does this work on mobile? ▼
Yes. All AllTools tools are fully responsive and work on phones and tablets.
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