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Context Switching Tax

You work eight hours. But how many of those hours are actually left for work after meetings, chat, “quick questions” and rebuilding context?

An approximate model, not a scientific productivity measure. You provide every assumption; all calculations run locally in your browser.

Attention calculator

How much of your day is left?

Use a typical workday — not your worst Monday and not an unusually quiet Friday.

Workday, hoursHow many hours you formally work each day.

Meetings per day, hoursAverage time spent in scheduled meetings.

Chat and reactive communication, min/daySlack, Teams, email, quick replies and “got a minute?”.

Unplanned switches / dayHow often you have to drop the current task and move to another.

Context recovery, min / switchYour estimate, not a “scientific constant”.

Workdays / week

Working weeks / year

Fully loaded employee cost / yearSalary + taxes + benefits + other direct employment costs.

Currency

The model counts meetings, reactive communication and only the recovery time after unplanned switches as fragmentation. The new task itself is not treated as “waste”.

Why

The problem may not be how fast people work. It may be how fragmented their attention is.

Meetings are visible on the calendar. Context switches are harder to see: each one looks small, but together they split the day into pieces where complex work becomes difficult.

This calculator is not an argument against every meeting or message. It makes the cost of a permanently reactive operating mode visible.