> ## 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 Cost Per Save: Measure Ad Bookmark Efficiency

> Track how much you spend for each save or bookmark of your ads across all platforms. Optimize content resonance and purchase intent efficiency.

<Tip>
  Blended Cost Per Save measures the average cost to generate one save or bookmark of your ads across all connected advertising platforms.
</Tip>

## Formula

<Info>
  **Blended Cost Per Save** = **Blended Spend** ÷ **Blended Saves**
</Info>

### Formula Components

| Metric                                                                                       | Definition                                                            |
| -------------------------------------------------------------------------------------------- | --------------------------------------------------------------------- |
| [**Blended Spend**](/reference/metrics/advertising/blended/blended-spend/blended-spend)      | Total advertising spend aggregated across all platforms               |
| [**Blended Saves**](/reference/metrics/advertising/blended/blended-engagement/blended-saves) | Total saves and bookmarks of your ads aggregated across all platforms |

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

***

## Example

Your campaigns generated **2,847 saves** across all platforms with a total spend of **\$8,500**.

| Platform    | Spend       | Saves     | Cost Per Save |
| ----------- | ----------- | --------- | ------------- |
| Meta        | \$4,250     | 1,523     | \$2.79        |
| TikTok      | \$2,975     | 892       | \$3.34        |
| Google      | \$1,275     | 432       | \$2.95        |
| **Blended** | **\$8,500** | **2,847** | **\$2.99**    |

***

## How It Works

Blended Cost Per Save divides your total ad spend by the total number of saves across all connected platforms. This gives you a unified view of how efficiently your budget generates high-intent engagement, since saves often indicate purchase consideration.

***

## When to Use

| Scenario                     | Action                                                     |
| ---------------------------- | ---------------------------------------------------------- |
| Evaluating content resonance | Lower cost per save indicates ads worth revisiting         |
| Purchase intent signals      | Saves often precede conversions—track efficiency           |
| Creative optimization        | Identify which creatives drive saves most cost-effectively |
| Budget allocation            | Shift spend toward platforms with lower cost per save      |

***

## Related Metrics

| Metric                                                                                                               | Relationship                         |
| -------------------------------------------------------------------------------------------------------------------- | ------------------------------------ |
| [Blended Spend](/reference/metrics/advertising/blended/blended-spend/blended-spend)                                  | Numerator in this calculation        |
| [Blended Saves](/reference/metrics/advertising/blended/blended-engagement/blended-saves)                             | Denominator in this calculation      |
| [Blended Cost Per Engagement](/reference/metrics/advertising/blended/blended-engagement/blended-cost-per-engagement) | Broader engagement efficiency metric |

[See all Blended Engagement metrics →](/reference/metrics/advertising/blended/blended-engagement)