Example 1
- stretches 8
- stretch 60 min
- interruptions 3
- recovery 12 min
- unplanned 120 min
6.8 hours short
8 × 3 × 12 ÷ 60 = 4.8. 120 ÷ 60 = 2. 8 − 4.8 − 2 = 1.2. The shortfall versus 8 is 6.8 hours.
Focus time after interruptions
The calculator uses the numbers you enter: focus stretches, interruptions, and unplanned meetings. 8 hours minus 4.8 of recovery and 2 hours of meetings is 6.8 hours short. The hourly rate sits in the grid.
The calculator does not measure productivity and does not read the calendar. Meetings: Meeting hours.
Results
Enter data and click Calculate.
How it works
The calculator counts planned hours as stretches times minutes, then divides by 60. Separately it multiplies stretches by interruptions and recovery minutes. It adds unplanned meetings. It subtracts that sum from the plan. 8 × 60 ÷ 60 = 8. 8 × 3 × 12 ÷ 60 = 4.8. 120 ÷ 60 = 2. 8 − 4.8 − 2 = 1.2. The shortfall versus the plan is 6.8 hours.
The main result comes from those five numbers. The share of the plan sits in the grid. An hourly rate is optional and does not change the main result.
Second example: 12 − 1.6 − 0.3 = 10.1 versus 12, which is 1.9 hours short. Third: the loss exceeds the plan, so 0 remains versus 4, which is 4 hours short.
The calculator does not measure productivity and does not read the calendar. A comma in 12.5 is read the same way as a period.
Formula
Result = plan − stretches × interruptions × recovery ÷ 60 − meetings ÷ 60. At 8, 60, 3, 12 and 120: 8 − 4.8 − 2 = 1.2, which is 6.8 hours short.
What these numbers mean
8 minus 4.8 and 2 is 6.8 hours short.
- focus time
- The plan minus recovery minus unplanned meetings. At 8, 4.8 and 2 that leaves 1.2, which is 6.8 hours short.
- interruptions
- Stretches times interruptions times recovery minutes, then over 60. In the first example that is 4.8 hours.
- hourly rate
- The value of recovery and meeting hours. It sits in the grid and does not change the shortfall versus the plan.
How to use
- Enter 8 stretches of 60 minutes.
- Add 3 interruptions, 12 recovery minutes, and 120 meeting minutes.
- Click Calculate. The result is 6.8 hours short.
- Second example: 12, 60, 1, 8 and 20 is 1.9 hours short. Third: 4, 60, 6, 20 and 450 is 4 hours short.
- You can skip the hourly rate. When you fill it, it appears in the grid and does not change the main result.
Examples
Example 2
- stretches 12
- stretch 60 min
- interruptions 1
- recovery 8 min
- unplanned 20 min
1.9 hours short
12 × 1 × 8 ÷ 60 = 1.6. 20 ÷ 60 = 0.3. 12 − 1.6 − 0.3 = 10.1. The shortfall versus 12 is 1.9 hours.
Example 3
- stretches 4
- stretch 60 min
- interruptions 6
- recovery 20 min
- unplanned 450 min
4 hours short
4 × 6 × 20 ÷ 60 = 8. 450 ÷ 60 = 7.5. 4 − 8 − 7.5 becomes 0. The shortfall versus 4 is 4 hours.
Related calculators
Common questions
What does 6.8 hours short mean?
8 × 3 × 12 ÷ 60 = 4.8. 120 ÷ 60 = 2. 8 − 4.8 − 2 = 1.2. The shortfall versus 8 is 6.8 hours.
How is the result calculated?
Result = plan − stretches × interruptions × recovery ÷ 60 − meetings ÷ 60. At 8, 60, 3, 12 and 120 the shortfall is 6.8 hours.
What is the second example?
12 − 1.6 − 0.3 is 1.9 hours short.
What is the third example?
The loss exceeds the plan, so 0 remains versus 4, which is 4 hours short.
What does the calculator not do?
The calculator does not measure productivity and does not read the calendar. The hourly rate is optional.
Do all fields enter the main result?
No. The main result comes from stretches, minutes, interruptions, recovery, and meetings. The rate is optional.
What do focus, interruptions, and the rate mean?
Focus is the plan minus recovery minus meetings. Interruptions enter the recovery minutes. The rate sits in the grid.
Does a comma in 12.5 work?
Yes. 12.5 and 12,5 are read the same way.
Sources
The result comes from the numbers you enter. This is hours of focus missing versus the plan, not a productivity score.
Page updated in 2026.