Productivity

Context Switching Cost Calculator

Research by Gloria Mark (UC Irvine) found it takes an average of 23 minutes to fully regain focus after an interruption. Every time you switch tasks — check Slack, flip to email, answer a question — you trigger a recovery period. This calculator shows the true annual cost.

Task switches per day (involuntary interruptions + intentional switches)

Average knowledge worker switches context ~50 times/day. Be honest.

Recovery time per switch (minutes)

Research range: 10–23 min. Default 15 is conservative.

15 minutes

Work days per year

Your hourly value ($ — salary or billable rate)

Divide annual salary by 2,000 for rough hourly rate

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productive days lost per year

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Hours lost/day

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Hours lost/year

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Dollar cost/year