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Critical to quality (CTQ)

Measurable product or process characteristics that have the highest impact on customer requirements.

Definition and context

CTQs translate customer expectations into concrete controls that production and inspection teams can execute consistently.

Clear CTQ definitions keep teams focused on what matters most for acceptance and performance.

Defining CTQs

CTQs should be specific, measurable, and tied to clear limits, methods, and ownership.

Examples include key dimensions, safety attributes, labeling requirements, and performance thresholds.

From requirement to control

Once defined, CTQs must appear in control plans, work instructions, and inspection templates.

Escalation paths should be explicit when CTQ checks fail or trend toward risk.

Where this term fits in the workflow

Critical to quality (CTQ) is usually shown in the inspection and sampling.

Terms used when teams decide what to inspect, how much to sample, and whether a lot can ship.

What is KaizenQ?

KaizenQ helps factory teams record inspection results, defect photos, and notes in one report shared with the office.

Learn more
KaizenQ inspection report preview

Key takeaways

  • CTQs focus teams on the characteristics that drive customer acceptance.
  • They require clear limits, methods, and escalation rules.
  • Digital workflows make CTQ compliance easier to enforce.

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