# Check how long tasks really take

Published by Pawel Jozefiak. [About this project](https://adhd100.jock.pl/about/), [How we check sources](https://adhd100.jock.pl/methodology/)

- Canonical: https://adhd100.jock.pl/check-time-estimates/
- Language: en
- First published: 2026-09-29
- Evidence checked: 2026-09-29, using AI-assisted source verification
- Clinical review: Not clinically reviewed
- Number 90 of 100 in the list: https://adhd100.jock.pl/#check-time-estimates

Time your own tasks, so the next plan is more realistic.

**The number:** Time activities before making a daily schedule ([BYTES Primary Care Network, NHS, 2026](https://www.bytespcn.nhs.uk/autism-and-adhd/))

## The evidence

- How sure: Certainty of evidence: Not rated. Measured in people with ADHD.
- Evidence grade: C. Grade C: small or mixed studies, expert consensus or clinical practice. Worth knowing, not worth betting on.
- Basis: ADHD clinical guidance and programme content; the isolated strategy has no separately rated efficacy estimate.
- Benefit: 39/100. The benefit score is an editorial prioritization for the general list, weighted by certainty. It is not a prediction of what will happen for you.

## Why it matters

People with ADHD show timing differences in lab research, and NHS guidance suggests measuring everyday activities. Timing a familiar task gives you something to plan with, but this strategy's effect on lateness has not been established in isolation. A wrong estimate is useful data.

## How to do it

1. Pick one task you repeat, like getting out of the house.
2. Guess how long it takes, then note when it starts and finishes.
3. Count setup, finding things and switching over in the total.
4. Plan the next attempt with what you saw, leaving room for it to vary.

## Putting it into practice

### Start now

- 1 minute: Pick one task you repeat and usually think will take less time than it does.
- 5 minutes: Estimate and time a brief familiar task, including its setup.
- 15 minutes: Compare an estimate with an observed task duration and update the next calendar slot.
- 30 minutes: Observe one routine from preparation to finish and identify the overlooked transition.

### What it looks like

- Include finding shoes and locking the door when timing your departure.
- Measure reading and replying to an email, not only typing the reply.

### Common mistakes

- Timing everything is extra work. Start with one task you repeat.
- One unusually fast attempt is a shaky guide. Compare a few ordinary ones.

### A structured start

**Replace a guess with useful data**

1. Measure one familiar task.
2. Check it on another ordinary day.
3. Plan using the observed range and leave some room.

### Trusted how-to guides

- [Autism and ADHD](https://www.bytespcn.nhs.uk/autism-and-adhd/), BYTES Primary Care Network, NHS

## Sources

- [Autism and ADHD](https://www.bytespcn.nhs.uk/autism-and-adhd/), BYTES Primary Care Network, NHS, 2026 (Tier 1 guideline)
- [Time-Perception Deficits in Attention-Deficit/Hyperactivity Disorder: A Systematic Review and Meta-Analysis](https://pubmed.ncbi.nlm.nih.gov/38145491/), Developmental Neuropsychology, 2024 (Tier 2 study)

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General information about ADHD, not a diagnosis or an individual treatment plan. Tailoring changes the order of suggestions; it does not assess you. Medication decisions belong with you and a qualified clinician.

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