> ## 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 All Conversions: True Acquisition Cost

> Track your cost per all conversions across advertising channels. Includes cross-device and view-through conversions for complete acquisition cost analysis.

<Tip>
  Blended Cost per All Conversions measures the average cost for each conversion attributed to your advertising across all platforms, including cross-device and view-through conversions.
</Tip>

## Formula

<Info>
  **Blended Cost per All Conversions** = **Blended Spend** ÷ **Blended All Conversions**
</Info>

### Formula Components

| Metric                                                                                                        | Definition                                                                    |
| ------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------- |
| [**Blended Spend**](/reference/metrics/advertising/blended/blended-spend)                                     | Total advertising spend across all connected platforms                        |
| [**Blended All Conversions**](/reference/metrics/advertising/blended/all-conversions/blended-all-conversions) | Total conversions including cross-device and view-through across all channels |

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

***

## Example

Your store spent **\$25,000** across all advertising channels in May and generated **1,850 all conversions** (including click-through, view-through, and cross-device conversions).

| Channel     | Spend        | All Conversions | Cost/All Conv. |
| ----------- | ------------ | --------------- | -------------- |
| Meta        | \$12,500     | 920             | \$13.59        |
| Google      | \$8,500      | 640             | \$13.28        |
| TikTok      | \$4,000      | 290             | \$13.79        |
| **Blended** | **\$25,000** | **1,850**       | **\$13.51**    |

***

## How It Works

Blended Cost per All Conversions aggregates total ad spend and all conversion events from Meta, Google, and TikTok, then calculates the average cost per conversion. Unlike standard cost-per-conversion which counts only click-attributed conversions, this metric includes cross-device conversions (user clicks on mobile, converts on desktop) and view-through conversions (user sees an ad but converts without clicking).

***

## When to Use

| Scenario                          | Action                                                              |
| --------------------------------- | ------------------------------------------------------------------- |
| Measuring true acquisition cost   | Include all conversion types for complete cost analysis             |
| Evaluating view-through ad impact | Capture conversions from users who saw but didn't click ads         |
| Cross-device customer journeys    | Account for customers who switch devices before converting          |
| Full-funnel campaign measurement  | Get accurate cost metrics for awareness and consideration campaigns |

***

## Related Metrics

| Metric                                                                                                        | Relationship                                                            |
| ------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------- |
| [Blended Spend](/reference/metrics/advertising/blended/blended-spend)                                         | Numerator — total ad spend across platforms                             |
| [Blended All Conversions](/reference/metrics/advertising/blended/all-conversions/blended-all-conversions)     | Denominator — total conversions including view-through and cross-device |
| [Blended Cost per Conversion](/reference/metrics/advertising/blended/conversions/blended-cost-per-conversion) | Click-attributed conversions only (excludes view-through)               |

[See all Blended Conversions metrics →](/reference/metrics/advertising/blended)