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Time on task 0:35
A 35-second explainer of Time on task, narrated over the same demo you can try yourself.
Try the interactive Time on task demo
What this video covers
Time on task is how long it takes someone to complete a specific task, from start to finish. It's the most common efficiency metric in usability testing - and one of the easiest to misread.
The seconds you just clocked are a time-on-task measurement - the exact metric behind every timed demo on this site. On its own, though, your number means little: fast could mean you breezed it, or that you gave up and clicked the first plausible thing. The metric only speaks once you pair it with whether you actually succeeded.