Image ©2025 ux-qa.com

What is Time on Task (ToT)?

Time on Task measures how long users take to complete tasks in usability testing, process analysis, and performance benchmarking.

It provides insight into the efficiency of task performance.

Time on Task is the total duration a user spends from the beginning to the end of a task, typically recorded in seconds or minutes.

What is Time on Task?

Quantitative Metric

Measured in units of time, typically seconds or minutes.

Continuous Variable

Unlike binary metrics, ToT varies in magnitude and can be averaged across users.

Task-Bound

Calculated per task and per user; comparisons require consistency in task definition.

Contextual

Influenced by user skill level, task complexity, interface design, and environmental conditions.

How is Tot Used?

Usability Testing

To assess how quickly users can complete tasks such as logging in, finding information, or making a purchase.

Benchmarking

To compare time performance across design versions or against competitors.

Workflow Optimization

To identify bottlenecks or inefficiencies in processes.

Cognitive Load Estimation

Higher times may correlate with increased mental effort or confusion.

What is the Formula for Average Time on Task?