Attention Span Score Calculator

Work out attention span score instantly with clear inputs, formula shown and shareable results.

About Attention Span Score Calculator

Focus share is focused time over total time, and the average uninterrupted stretch divides focused time by the number of segments, which is interruptions plus one. Average stretch length matters more than total focus time, because deep work needs stretches long enough to reach it in the first place.

Formula

Average stretch

stretch = focused minutes / (interruptions + 1)

Worked example

With the default values below, Attention Span Score Calculator returns Share of the session spent focused of 70.00%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Total time on the taskminimum 0.1 min: 60 min
Time actually focusedminimum 0 min: 42 min
Number of interruptionsminimum 0: 5

Results

Share of the session spent focused: 70.00%
Average uninterrupted stretch: 7.00 min
Interruptions per hour: 5.00
Minutes lost to distraction: 18.0 min

Step by step

1Values used
2Average stretch
3Share of the session spent focused= 70.00
4Average uninterrupted stretch= 7.00 min
5Interruptions per hour= 5.00
6Minutes lost to distraction= 18.0 min

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Attention Span Score figure worked out?

stretch = focused minutes / (interruptions + 1). Focus share is focused time over total time, and the average uninterrupted stretch divides focused time by the number of segments, which is interruptions plus one.

Why does this matter?

Average stretch length matters more than total focus time, because deep work needs stretches long enough to reach it in the first place.

What do I need to enter?

Enter total time on the task, time actually focused, number of interruptions. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.