> ## 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 CPM: Cost Per Thousand Impressions

> Track Meta CPM to understand your cost per thousand impressions. Optimize ad reach efficiency and compare audience costs across campaigns.

<Tip>
  Meta CPM measures how much you pay for every 1,000 times your ad is shown on Meta platforms.
</Tip>

## Formula

<Info>
  **Meta CPM** = ( **Meta Spend** ÷ **Meta Impressions** ) × 1,000
</Info>

### Formula Components

| Metric                                                                                     | Definition                     |
| ------------------------------------------------------------------------------------------ | ------------------------------ |
| [**Meta Spend**](/reference/metrics/advertising/meta/meta-spend/meta-spend)                | Total amount spent on Meta ads |
| [**Meta Impressions**](/reference/metrics/advertising/meta/meta-audience/meta-impressions) | Total times ads were shown     |

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

***

## Example

Your Meta campaigns delivered **500,000 impressions** last week with a total spend of **\$3,500**.

| Metric           | Value      | Calculation                 |
| ---------------- | ---------- | --------------------------- |
| Meta Spend       | \$3,500    | Total ad spend              |
| Meta Impressions | 500,000    | Total impressions delivered |
| **Meta CPM**     | **\$7.00** | (\$3,500 ÷ 500,000) × 1,000 |

***

## How It Works

CPM calculates the cost efficiency of reaching your audience at scale. The formula divides your total ad spend by the number of impressions, then multiplies by 1,000 to express the cost per thousand views. Lower CPM means you're reaching more people for less money.

***

## When to Use

| Scenario                     | Action                                                         |
| ---------------------------- | -------------------------------------------------------------- |
| Comparing audience costs     | Use CPM to identify which audiences are cheapest to reach      |
| Planning awareness campaigns | Estimate budget needed to reach a target number of impressions |
| Seasonal cost monitoring     | Track CPM spikes during competitive periods like Q4            |
| Creative testing             | Compare CPM across ad creatives to find efficient combinations |

***

## Related Metrics

| Metric                                                                                 | Relationship                           |
| -------------------------------------------------------------------------------------- | -------------------------------------- |
| [Meta Spend](/reference/metrics/advertising/meta/meta-spend/meta-spend)                | Numerator in CPM calculation           |
| [Meta Impressions](/reference/metrics/advertising/meta/meta-audience/meta-impressions) | Denominator in CPM calculation         |
| [Meta CTR](/reference/metrics/advertising/meta/meta-clicks/meta-ctr)                   | Engagement rate from those impressions |

[See all Meta Audience metrics →](/reference/metrics/advertising/meta/meta-audience)