> ## 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.

# Meta Purchases: Attributed Conversion Count

> Track how many completed purchases Meta attributes to your ads via pixel or Conversions API to measure campaign effectiveness.

<Tip>
  Meta Purchases counts how many completed purchases Meta attributes to your ads, based on pixel or Conversions API data.
</Tip>

## Formula

<Info>
  **Meta Purchases** = **COUNT** ( purchase events )

  Each purchase event attributed to your Meta ads is counted once, regardless of order value.
</Info>

### Formula Components

| Metric              | Definition                                                           |
| ------------------- | -------------------------------------------------------------------- |
| **purchase events** | Purchase conversion events reported by Meta Pixel or Conversions API |

| Metadata        |                                   |
| --------------- | --------------------------------- |
| **Type**        | Number                            |
| **Data Source** | [Meta Ads](/sources/facebook-ads) |
| **Aggregation** | Count                             |

***

## Example

Your Meta campaigns drove **847 purchases** in March across three ad sets.

| Ad Set      | Purchases | Spend   | CPA     |
| ----------- | --------- | ------- | ------- |
| Retargeting | 412       | \$2,060 | \$5.00  |
| Lookalike   | 298       | \$2,682 | \$9.00  |
| Prospecting | 137       | \$2,740 | \$20.00 |

***

## How It Works

Meta counts a purchase when a visitor completes checkout after interacting with your ad within the attribution window. The purchase event is captured via the Meta Pixel on your site or sent through the Conversions API from your server.

***

## When to Use

| Scenario                        | Action                                                              |
| ------------------------------- | ------------------------------------------------------------------- |
| Evaluating campaign performance | Compare purchase counts across campaigns to identify top performers |
| Optimizing ad spend allocation  | Shift budget toward ad sets generating more purchases               |
| Assessing funnel health         | Track purchase volume alongside add-to-cart and checkout metrics    |
| Benchmarking seasonal trends    | Compare monthly purchase counts to identify growth patterns         |

***

## Related Metrics

| Metric                                                                                            | Relationship                       |
| ------------------------------------------------------------------------------------------------- | ---------------------------------- |
| [Meta Purchases Value](/reference/metrics/advertising/meta/meta-conversions/meta-purchases-value) | Total revenue from these purchases |
| [Meta CPA](/reference/metrics/advertising/meta/meta-efficiency/meta-cpa)                          | Cost per purchase conversion       |
| [Meta ROAS](/reference/metrics/advertising/meta/meta-efficiency/meta-roas)                        | Return on ad spend from purchases  |

[See all Meta Conversions metrics →](/reference/metrics/advertising/meta/meta-conversions)