Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Time Zones
Jet Lag Recovery Calculator
Estimate the number of days needed to fully resync your circadian rhythm after long-haul travel, weighted by time-zone shift, direction (eastward is harder), age, and travel frequency. Use it before a trip to plan meetings and downtime realistically.
Fill in the required fields to see your result.
Sleep
Jet Lag Recovery Calculator
Estimate how many days it will take to recover from jet lag based on time zones crossed, travel direction, age, and your chronotype. Use it before international flights to plan recovery time.
Fill in the required fields to see your result.
Key differences
| Jet Lag Recovery Calculator | Jet Lag Recovery Calculator | |
|---|---|---|
| Category | Time Zones | Sleep |
| Inputs required | 4 | 4 |
| Result | Recovery Time (days) | Recovery Days (days) |
| What it does | Estimate the number of days needed to fully resync your circadian rhythm after long-haul travel, weighted by time-zone shift, direction (eastward is harder), age, and travel frequency. Use it before a trip to plan meetings and downtime realistically. | Estimate how many days it will take to recover from jet lag based on time zones crossed, travel direction, age, and your chronotype. Use it before international flights to plan recovery time. |