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Fishbone Diagram

A one-page root-cause worksheet drawn as an Ishikawa fishbone. Name the effect you're diagnosing — it becomes the head of the fish — then sort its drivers into six bones branching off the spine: People, Process, Tools, Environment, Information, and Timing. List a few causes under each, then converge on the one most likely root cause and the fix it points to. The symptom is rarely the cause, and the loudest cause is rarely the root — six fixed bones prompt every angle so nothing gets overlooked. Leave any line blank to fill in by hand.

  • Portrait
  • 1 page
  • Reflection

Best for: Diagnosing why something went wrong by sorting the causes before you fix the symptom.

Build your fishbone diagram

Name the problem.

Sort the causes into six bones.

One cause per line. The first three in each category print as ribs; the rest stay blank to fill in by hand.

List a few causes, or print it blank and fill it in by hand.

No account required. No data saved.

Click a sample to enlarge. Your live preview above updates as you edit — download uses the button in the builder.

Filled example
Blank layout
Alt style

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