Time Blindness Calculator

ADHD brains consistently underestimate how long things take. Enter your tasks with your time guesses, and this tool adds realistic buffers for getting started, transitions, and inevitable distractions. Stop being late. Stop running out of time.

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What Is Time Blindness?

Time blindness is a core ADHD symptom where your brain struggles to accurately perceive, estimate, and track the passage of time. You think getting ready takes 10 minutes (it takes 35). You think the commute is 15 minutes (it is 25). You think you can do "one more thing" before leaving (you cannot). This is not laziness or poor planning — it is a neurological difference in how ADHD brains process time.

The ADHD Time Multiplier

How This Calculator Works

  • Getting started buffer: +5 min per task (the time to actually begin, not just think about beginning)
  • ADHD time multiplier: Your estimate × 1.5-2x (research shows ADHD adults underestimate task duration by 40-60%)
  • Transition buffer: +5 min between tasks (context switching is harder with ADHD)
  • Distraction buffer: +10% per task (phone checks, rabbit holes, "just one more thing")

Example

"I need to shower, eat, and drive to work"

  • You think: shower (10 min) + eat (10 min) + drive (15 min) = 35 min
  • Reality with ADHD buffers: getting up (5 min) + shower (20 min) + transition (5 min) + eat (18 min) + transition (5 min) + find keys/bag (5 min) + drive (20 min) = 78 min
  • You needed to start 43 minutes earlier than you thought