> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Avg. Active Time: Engaged Time Per Session

> Track average time visitors are actively engaged per session. Excludes idle periods for a true engagement measure.

<Tip>
  Avg. Active Time measures the average time per session where visitors were actively engaged—moving mouse, typing, scrolling—excluding idle periods.
</Tip>

## Formula

<Info>
  **Avg. Active Time** = **Total Active Time** ÷ **Session Count**
</Info>

### Formula Components

| Metric                                                                | Definition                                        |
| --------------------------------------------------------------------- | ------------------------------------------------- |
| **Total Active Time**                                                 | Sum of active engagement time across all sessions |
| [**Session Count**](/reference/metrics/funnel/sessions/session-count) | Total number of sessions                          |

| Metadata        |                         |
| --------------- | ----------------------- |
| **Type**        | Duration                |
| **Data Source** | [Upstack Pixel](/pixel) |
| **Aggregation** | Average                 |

***

## Example

Sessions averaged **2 minutes 15 seconds** of active engagement out of a **3 minute 42 second** total duration.

| Page Type     | Avg. Duration | Avg. Active Time | Active % |
| ------------- | ------------- | ---------------- | -------- |
| Product Pages | 2:30          | 2:10             | 87%      |
| Blog Posts    | 4:00          | 2:45             | 69%      |
| Checkout      | 5:15          | 4:30             | 86%      |

***

## How It Works

Active time is measured when the Upstack Pixel detects user interaction signals: mouse movement, keyboard input, scrolling, or touch events. Periods without these signals are classified as idle time and excluded from this metric.

***

## When to Use

| Scenario                   | Action                                        |
| -------------------------- | --------------------------------------------- |
| Low active-to-total ratio  | Investigate content engagement or page issues |
| Comparing page performance | Identify which pages hold attention           |
| Checkout optimization      | Ensure checkout flow keeps users active       |
| Content quality assessment | Measure actual reading/interaction time       |

***

## Related Metrics

| Metric                                                                           | Relationship                |
| -------------------------------------------------------------------------------- | --------------------------- |
| [Avg. Session Duration](/reference/metrics/funnel/sessions/avg-session-duration) | Total time including idle   |
| [Avg. Idle Time](/reference/metrics/funnel/sessions/avg-idle-time)               | Time spent inactive         |
| [Avg. Interactions](/reference/metrics/funnel/sessions/avg-interactions)         | Number of engagement events |

[See all Session metrics →](/reference/metrics/funnel/sessions)