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Free tool

Leave-on-Time Calculator

Enter when you need to arrive and get your “start getting ready” and “leave now” times, with a buffer built in.

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How to use it

  1. Enter your arrival time and travel time.
  2. Add getting-ready time and a buffer.
  3. Set two alarms with the times shown.

Why it helps with ADHD

Lateness usually comes from forgetting the getting-ready time. Planning backward fixes that.

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Articles that use this tool

Time & time blindness

How to Stop Being Late With ADHD: The Two-Alarm System

A practical system for chronic lateness: plan backward from arrival, add a transition buffer and use two alarms, one to get ready and one to leave.

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