> ## 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.

# Blended Audience Metrics

> Cross-platform audience metrics for reach, impressions, and frequency across Meta, Google, and TikTok. Track total ad exposure and cost efficiency in one view.

Blended Audience metrics aggregate reach, impressions, frequency, and audience costs from all connected advertising platforms. Understand your total ad exposure without checking each platform separately.

<Info>
  **Data Sources:** [Meta Ads](/sources/facebook-ads), [Google Ads](/sources/google-ads), [TikTok Ads](/sources/tiktok)\
  **Metrics:** 5
</Info>

## Metrics in This Group

| Metric                                                                                             | Description                                        | When to Use                             |
| -------------------------------------------------------------------------------------------------- | -------------------------------------------------- | --------------------------------------- |
| [Blended Impressions](/reference/metrics/advertising/blended/blended-audience/blended-impressions) | Total ad views across all platforms                | Measure total ad exposure and scale     |
| [Blended Reach](/reference/metrics/advertising/blended/blended-audience/blended-reach)             | Unique users who saw your ads across all platforms | Measure total audience size             |
| [Blended Frequency](/reference/metrics/advertising/blended/blended-audience/blended-frequency)     | Average times each person saw your ads             | Detect ad fatigue and optimize delivery |
| [Blended CPM](/reference/metrics/advertising/blended/blended-audience/blended-cpm)                 | Cost per 1,000 impressions across all platforms    | Evaluate delivery cost efficiency       |
| [Blended CPP](/reference/metrics/advertising/blended/blended-audience/blended-cpp)                 | Cost per person reached across all platforms       | Measure cost efficiency per unique user |

## How These Metrics Relate

* **Blended Impressions** counts every ad view across platforms
* **Blended Reach** counts unique individuals across platforms
* **Blended Frequency** = Impressions ÷ Reach — average views per person
* **Blended CPM** = Spend ÷ Impressions × 1,000 — measures delivery cost
* **Blended CPP** = Spend ÷ Reach — cost per person reached

## Platform Overlap

Users may see ads on multiple platforms. Platform totals may exceed blended totals because:

* A user who sees ads on both Meta and TikTok counts once in Blended Reach
* Platform-specific reach counts them separately in each platform's metrics

Blended metrics provide the most accurate total audience picture.