> ## 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 Reach: Cross-Platform Audience Size

> Track unique users who saw your ads across Meta, Google, and TikTok. Understand total audience size and eliminate platform overlap in reach reporting.

<Tip>
  The total number of unique users who saw your ads at least once across all connected advertising platforms.
</Tip>

## Formula

<Info>
  **Blended Reach** = **COUNT DISTINCT** ( Users ) **WHERE** impression ≥ 1 **ACROSS** all platforms
</Info>

### Formula Components

| Metric             | Definition                                                                        |
| ------------------ | --------------------------------------------------------------------------------- |
| **Users**          | Individual people served at least one ad impression across any connected platform |
| **impression ≥ 1** | Filter ensuring only users with at least one ad view are counted                  |

| Metadata        |                                                                                                     |
| --------------- | --------------------------------------------------------------------------------------------------- |
| **Type**        | Number                                                                                              |
| **Data Source** | [Meta Ads](/sources/facebook-ads), [Google Ads](/sources/google-ads), [TikTok Ads](/sources/tiktok) |
| **Aggregation** | Count Distinct                                                                                      |

***

## Example

Your campaigns reached **2.4M unique users** across all platforms this month:

| Platform   | Reach | Share |
| ---------- | ----- | ----- |
| Meta Ads   | 1.8M  | 75%   |
| Google Ads | 420K  | 18%   |
| TikTok Ads | 180K  | 7%    |

Note: Platform totals may exceed blended reach due to cross-platform audience overlap.

***

## How It Works

Blended Reach aggregates unique user counts from all connected ad platforms. Each platform reports its own reach independently—users who see ads on multiple platforms are counted once per platform but may appear in multiple platform totals. The blended figure provides a unified view of total audience exposure.

***

## When to Use

| Scenario                  | Action                                           |
| ------------------------- | ------------------------------------------------ |
| Measuring brand awareness | Track how many unique people saw your ads        |
| Evaluating media mix      | Compare reach contribution by platform           |
| Calculating frequency     | Divide Blended Impressions by Blended Reach      |
| Optimizing CPP            | Monitor cost per person reached across platforms |

***

## Related Metrics

| Metric                                                                                             | Relationship                                 |
| -------------------------------------------------------------------------------------------------- | -------------------------------------------- |
| [Blended Impressions](/reference/metrics/advertising/blended/blended-audience/blended-impressions) | Total ad views (Reach counts unique users)   |
| [Blended Frequency](/reference/metrics/advertising/blended/blended-audience/blended-frequency)     | Impressions ÷ Reach (average views per user) |
| [Blended CPP](/reference/metrics/advertising/blended/blended-audience/blended-cpp)                 | Spend ÷ Reach (cost per person reached)      |

[See all Blended Audience metrics →](/reference/metrics/advertising/blended/blended-audience)