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Both calculators run independently β change the inputs on either side to compare results.
Power Nap Productivity Calculator
Estimates your post-nap productivity level (0β95 scale) based on current alertness, nap duration, and the time of day you plan to nap. Use it to decide whether a short nap is worth taking before an important task.
Post-Nap Alertness Level
75 %
65-84% is the target range for a 10-20 minute power nap, which studies link to a 34% improvement in performance. The example case (50% + 20-min nap) lands here at 75%.
This score is the formula's projected alertness on a 0-95% scale, capped at 95%; thresholds reflect that a 10-20 min power nap typically restores function without sleep inertia.
Optimal Nap Timing Calculator
Find your ideal nap window based on when you wake up and when you go to bed. Useful for avoiding grogginess and not disrupting your night sleep.
Key differences
| Power Nap Productivity Calculator | Optimal Nap Timing Calculator | |
|---|---|---|
| Category | Sleep | Sleep |
| Inputs required | 3 | 2 |
| Result | Post-Nap Alertness Level (%) | Optimal Nap Start Time (hours) |
| What it does | Estimates your post-nap productivity level (0β95 scale) based on current alertness, nap duration, and the time of day you plan to nap. Use it to decide whether a short nap is worth taking before an important task. | Find your ideal nap window based on when you wake up and when you go to bed. Useful for avoiding grogginess and not disrupting your night sleep. |