User Experience
Task Success Rate
Also known as: Success rate
Plain English
How many people actually complete the task.
Definition
Task glossarySuccess RateSuccess rate is the percentage of users who successfully complete a task.Open glossary term measures the percentage of users who successfully complete a given task.
In practice
Used in guideUsability TestingObserving users complete tasks to identify usability issues, friction, and barriers to success.Open guide to quantify how effective a design is.
The reality
High glossarySuccess RateSuccess rate is the percentage of users who successfully complete a task.Open glossary term can still hide frustration or inefficiency.
Also known as
Success rate
FAQ
Common questions
A few practical answers to the questions that usually come up around this term.
What is task success rate?
It is the percentage of users who complete a task successfully.
Why is it important?
It shows how effective a design is.
What is a limitation?
It does not measure how easy or frustrating the task was.
How is it calculated?
Successful completions divided by total attempts.
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