User Experience

Task Success Rate

Also known as: Success rate

Definition

Task measures the percentage of users who successfully complete a given task.

In practice

Used in to quantify how effective a design is.

The reality

High can still hide frustration or inefficiency.

Also known as

Success rate

Plain English

How many people actually complete the task.

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.

Related Services

User Experience Conversion Optimisation

Related Guides

Usability Testing

Related Terms

Task Completion Success Rate Error Rate

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Previous feedback

I had a fantastic experience working with Andy. One of his most impressive achievements during our time at NHS HEE was masterminding a deeply complex information architecture for a new platform that brought together a large number of legacy websites.

Will Parkhouse

Senior Content Designer

01/20