> ## 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 Add to Carts: Cross-Platform Shopping Intent

> Track add-to-cart events attributed to your ads across Meta, Google, and TikTok. Measure shopping intent driven by cross-platform advertising.

<Tip>
  Blended Add to Carts measures the total number of add-to-cart events attributed to your ads across all connected advertising platforms.
</Tip>

## Formula

<Info>
  **Blended Add to Carts** = **SUM** ( Add to Cart Events ) **ACROSS** All Channels
</Info>

### Formula Components

| Metric                                                                                                  | Definition                                            |
| ------------------------------------------------------------------------------------------------------- | ----------------------------------------------------- |
| [**Meta Add to Carts**](/reference/metrics/advertising/meta/meta-conversions/meta-add-to-carts)         | Add-to-cart events attributed to Meta Ads campaigns   |
| [**Google Add to Carts**](/reference/metrics/advertising/google/google-conversions/google-add-to-carts) | Add-to-cart events attributed to Google Ads campaigns |
| [**TikTok Add to Carts**](/reference/metrics/advertising/tiktok/tiktok-conversions/tiktok-add-to-carts) | Add-to-cart events attributed to TikTok Ads campaigns |

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

***

## Example

A DTC brand running campaigns across three platforms sees **2,847 add to carts** for the week:

| Platform          | Add to Carts | % of Total |
| ----------------- | ------------ | ---------- |
| Meta Ads          | 1,523        | 53.5%      |
| Google Ads        | 892          | 31.3%      |
| TikTok Ads        | 432          | 15.2%      |
| **Blended Total** | **2,847**    | **100%**   |

***

## How It Works

Blended Add to Carts aggregates add-to-cart conversion events reported by each advertising platform. When a user clicks an ad and adds a product to their cart within the attribution window, that platform counts the event. This metric sums those events across all connected platforms for a unified view.

***

## When to Use

| Scenario                                 | Action                                        |
| ---------------------------------------- | --------------------------------------------- |
| Measuring cross-platform shopping intent | Compare blended add to carts to total traffic |
| Evaluating funnel health                 | Track ratio of add to carts to checkouts      |
| Optimizing for consideration             | Use to measure mid-funnel ad effectiveness    |
| Budgeting across platforms               | Identify which platforms drive cart activity  |

***

## Related Metrics

| Metric                                                                                                              | Relationship                              |
| ------------------------------------------------------------------------------------------------------------------- | ----------------------------------------- |
| [Blended View Contents](/reference/metrics/advertising/blended/blended-conversions/blended-view-contents)           | Earlier funnel stage — product page views |
| [Blended Initiate Checkouts](/reference/metrics/advertising/blended/blended-conversions/blended-initiate-checkouts) | Next funnel stage — checkout starts       |
| [Blended Purchases](/reference/metrics/advertising/blended/blended-conversions/blended-purchases)                   | Final funnel stage — completed orders     |

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