20 minutes
Quick alertness reset with lower risk of grogginess.
Nap Calculator
Calculate nap wake times for 20, 30, 60, and 90 minute naps.
Use the nap calculator to compare quick alertness naps with longer full-cycle style options based on your current time.
When each nap length can help
30 minutes
Useful when you need extra rest but are short on time.
60 minutes
May help learning tasks but can feel heavier on wake.
90 minutes
Full-cycle style nap that can feel more restorative.
FAQ
Is a 20 minute nap enough?
For many people, a 20 minute nap can improve alertness without heavy grogginess.
Should I nap for 90 minutes?
A 90 minute nap can suit days when you have enough time for a fuller sleep cycle.