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ADHD time planning: from estimates to a day

You may need a better task estimate, a departure time, or a smaller plan for the day. Those are different questions. Start with the one in front of you, then use its answer in the rest of your plan.

These are practical planning prompts, not an ADHD assessment, treatment, or a guarantee that the day will go to plan. The calculators use your inputs, not AI predictions.

Choose a time-planning question

What do you need to work out?

You do not need to use every tool. Pick one question and work with a small, real example.

How long will this take?

Compare one to three past estimates with actual durations, then add an explicit transition allowance to a comparable next task.

Open the estimate calculator

When should I leave?

Work backward from the appointment's date and time. Include arrival margin, travel and preparation once each.

Open the backward planner

What fits today?

Start with fixed commitments and the time around them, then choose a small set of priorities with clear stopping points.

Open the realistic-day planner

Connect the answers without counting time twice

An estimate describes one task. A backward plan protects an appointment. A daily plan decides what can share the remaining space. Keep the assumptions visible when you move from one to the next.

  1. 1. Estimate a comparable task

    If past tasks took 30, 45 and 60 minutes after estimates of 20, 30 and 40, each ratio is 1.5. A new 30-minute estimate becomes 45 minutes. Adding a 10-minute transition reserves 55 minutes.

  2. 2. Protect the appointment

    For a 09:00 appointment with 20 minutes of preparation, 25 of travel and 10 of arrival margin, aim to arrive at 08:50, leave at 08:25, and begin preparation at 08:05.

  3. 3. Use the remaining capacity

    Put that reserved task block and the appointment preparation into the day once each. Do not add the same transition again just because you are moving to a different planner.

A smaller plan, worked through

Suppose you have 120 minutes before a fixed commitment. This is a planning example, not a formula for how productive you should be.

  1. Set aside 20 minutes for preparation and 10 for a transition: 90 minutes remain.
  2. Choose one task block of 45 minutes and one smaller task of 25 minutes: 70 minutes of work are planned.
  3. Leave the remaining 20 minutes unassigned, or reduce the plan further if those assumptions do not fit your day.

You are allowed to choose fewer priorities. If a necessary task does not fit, decide what can move, shrink, or be discussed with someone else rather than hiding the conflict in a longer list.

Check the assumptions before relying on a result

  • One to three past observations are a small sample. Use comparable tasks; the displayed range is not a confidence interval or a promise.
  • Departure calculations use your device's local timezone. Check the calendar date, especially near midnight or daylight-saving changes.
  • None of these pages checks traffic or runs a reliable appointment alarm. Set reminders on your own device.
  • A plan is something you can revise. Leave room for interruptions, care, recovery and information you do not have yet.

Read the background when it would help

The guides explain the methods and their boundaries in more detail. You can use the calculators without reading the whole guide first.

Know what happens to your plan

This hub has no task-entry fields. Time-buffer calculator entries disappear on reload; use Copy or Print to keep a result. The realistic-day guide's worksheet automatically saves in the same browser. These are different storage behaviors, and neither implies automatic cloud sync. Check the tool's own explanation before entering sensitive information on a shared device.

Have a time plan, but still need a first action?

If the block is now “I know when, but I cannot start,” use the task-initiation hub to choose a first step or sort a brain dump.

Explore task-initiation tools

Want to continue with a mobile workflow?

Explore Mind Vortex if you want a mobile place for thought capture, tasks and focus timers. You do not need the app to use these guides or calculators, and following this link does not transfer a plan.

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