> ## 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.

# Session Score: Composite Engagement Score

> A 0-100 composite score measuring visitor engagement based on time, interactions, scroll depth, and funnel progress.

<Tip>
  Session Score is a composite score (0-100) measuring how engaged a visitor was during a session, based on time, interactions, scroll depth, and funnel progress.
</Tip>

## Formula

<Info>
  **Session Score** = **Weighted Composite** ( Time Score + Interaction Score + Scroll Score + Funnel Score )
</Info>

### Formula Components

| Metric                | Definition                                            |
| --------------------- | ----------------------------------------------------- |
| **Time Score**        | Engagement based on active session duration           |
| **Interaction Score** | Engagement based on clicks, scrolls, and other events |
| **Scroll Score**      | Engagement based on scroll depth                      |
| **Funnel Score**      | Progress through the purchase funnel                  |

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

***

## Example

Your sessions averaged a **score of 62/100**, indicating moderate engagement.

| Traffic Source | Sessions | Avg. Session Score |
| -------------- | -------- | ------------------ |
| Email          | 2,000    | 74                 |
| Organic Search | 4,000    | 65                 |
| Paid Search    | 3,000    | 58                 |
| Social         | 1,000    | 48                 |

***

## How It Works

The Session Score combines multiple engagement signals into a single metric. Sessions with longer active time, more interactions, deeper scroll depth, and further funnel progress receive higher scores. This provides a holistic view of session quality beyond any single metric.

***

## When to Use

| Scenario                         | Action                                     |
| -------------------------------- | ------------------------------------------ |
| Comparing traffic source quality | Identify channels driving engaged visitors |
| Segmenting high-value visitors   | Target re-marketing at high-score sessions |
| Evaluating site changes          | Measure overall engagement impact          |
| Identifying problem areas        | Find pages with low average scores         |

***

## Related Metrics

| Metric                                                                   | Relationship                     |
| ------------------------------------------------------------------------ | -------------------------------- |
| [Intent Score](/reference/metrics/funnel/sessions/intent-score)          | Purchase likelihood specifically |
| [Avg. Page Score](/reference/metrics/funnel/sessions/avg-page-score)     | Per-page engagement              |
| [Avg. Funnel Stage](/reference/metrics/funnel/sessions/avg-funnel-stage) | Funnel progress component        |

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