The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. In the first example the result is +0.8 hours.
The calculator is not a training plan and does not read a watch. The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours.
Enter data and click Calculate.
The calculator uses the numbers you enter. The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. In the first example the result is +0.8 hours.
The five form fields are Last-night sleep, Resting HR delta vs 14-day baseline, Perceived fatigue, Muscle soreness / DOMS, and Post-workout fueling quality. Sleep versus 8 hours means: This is the main result on this page. In the first example it is +0.8 hours. Last-night sleep means: The first form field. It enters the formula or sits beside the result. The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. Resting HR delta vs 14-day baseline means: The second form field. The calculator is not a training plan and does not read a watch.
The second example gives -0.1 hours. The third example gives +2.5 hours. The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. In the first example the result is +0.8 hours.
The calculator is not a training plan and does not read a watch.
Enter 7.2, 2, 4, 3, 7, then click Calculate. A comma in 12.5 is read the same way as a period. Fields on a 0-10 scale are notes and are not the primary result unless this page formula says so.
The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours.
In the first example the result is +0.8 hours. The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours.
+0.8 hours
The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. In the first example the result is +0.8 hours.
-0.1 hours
The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. In the second example the result is -0.1 hours.
+2.5 hours
The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. In the third example the result is +2.5 hours.
In the first example the result is +0.8 hours. The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours.
With the second set of fields the result is -0.1 hours.
With the third set of fields the result is +2.5 hours.
The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours.
The calculator is not a training plan and does not read a watch.
This is the main result on this page. In the first example it is +0.8 hours. The first form field. It enters the formula or sits beside the result. The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. The second form field. The calculator is not a training plan and does not read a watch.
Yes. 12.5 and 12,5 are read the same way.
No. Fields on a 0-10 scale are notes, unless this page formula counts marked items from them. The primary result comes from this page formula.
The result is 8 minus last-night sleep. At 7.2 h the gap is 0.8 h. Resting-HR change sits beside it.
Yes. At 8.1 h the result is negative. It is still the difference versus 8 hours, not a recovery grade.
No. Fatigue, soreness, and fueling are notes. The calculator does not read a watch and is not a training plan.
It is the fixed reference on this page, not a personal sleep norm.
It sits in the second row. It is not subtracted from the sleep gap.
The result is 8 hours minus last-night sleep. Resting-HR change sits beside that gap. Fatigue, soreness, and fueling notes do not change the hours. The calculator is not a training plan and does not read a watch.
Page updated in 2026.
