> ## 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 All Conversions ROAS: Cross-Platform Return on Ad Spend

> Measure aggregated ROAS across Meta, Google, and TikTok including all conversion types. Formula, examples, and optimization strategies.

<Tip>
  Return on ad spend calculated from all conversion types—including cross-device and view-through conversions—aggregated across all ad platforms.
</Tip>

## Formula

<Info>
  **Blended All Conversions ROAS** = **Blended All Conversions Value** ÷ **Blended Spend**
</Info>

### Formula Components

| Metric                                                                                                                        | Definition                                               |
| ----------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------- |
| [**Blended All Conversions Value**](/reference/metrics/advertising/blended/blended-conversions/blended-all-conversions-value) | Total revenue from all conversion types across platforms |
| [**Blended Spend**](/reference/metrics/advertising/blended/blended-spend/blended-spend)                                       | Total ad spend aggregated across all platforms           |

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

***

## Example

Your campaigns show **3.8x** blended all conversions ROAS this month:

| Metric                           | Value     |
| -------------------------------- | --------- |
| Blended All Conversions Value    | \$152,000 |
| Blended Spend                    | \$40,000  |
| **Blended All Conversions ROAS** | **3.8x**  |

This includes view-through and cross-device conversions that standard ROAS may miss.

***

## How It Works

Blended All Conversions ROAS divides total conversion value—including cross-device and view-through conversions—by total ad spend across Meta, Google, and TikTok. This provides a comprehensive view of advertising efficiency that captures the full customer journey across devices and touchpoints.

***

## When to Use

| Scenario                               | Action                                         |
| -------------------------------------- | ---------------------------------------------- |
| Measuring total advertising efficiency | Compare all conversions ROAS vs standard ROAS  |
| Evaluating view-through impact         | Quantify revenue from non-click conversions    |
| Cross-device attribution               | Capture conversions that span multiple devices |
| Executive reporting                    | Report holistic marketing ROI to stakeholders  |

***

## Related Metrics

| Metric                                                                                                                    | Relationship                                       |
| ------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------- |
| [Blended ROAS](/reference/metrics/advertising/blended/blended-efficiency/blended-roas)                                    | Click-attributed conversions only (narrower scope) |
| [Blended Conversions ROAS](/reference/metrics/advertising/blended/blended-efficiency/blended-conversions-roas)            | Similar metric with different conversion window    |
| [Blended All Conversions Value](/reference/metrics/advertising/blended/blended-conversions/blended-all-conversions-value) | Numerator in this calculation                      |

[See all Blended Efficiency metrics →](/reference/metrics/advertising/blended/blended-efficiency)