> ## 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.

# TikTok Cost per Search: Measure Search Event Efficiency

> Track your TikTok cost per search to measure how efficiently your ads drive site search activity. Lower costs mean better product discovery performance.

<Tip>
  Average spend per search event from your TikTok ads—a key indicator of how efficiently your campaigns drive product discovery and site engagement.
</Tip>

## Formula

<Info>
  **TikTok Cost per Search** = **TikTok Ad Spend** ÷ **TikTok Searches**
</Info>

### Formula Components

| Metric                                                                                          | Definition                                            |
| ----------------------------------------------------------------------------------------------- | ----------------------------------------------------- |
| [**TikTok Ad Spend**](/reference/metrics/advertising/tiktok/tiktok-spend/tiktok-spend)          | Total amount spent on your TikTok ads                 |
| [**TikTok Searches**](/reference/metrics/advertising/tiktok/tiktok-conversions/tiktok-searches) | Number of search events attributed to your TikTok ads |

| Metadata        |                               |
| --------------- | ----------------------------- |
| **Type**        | Currency                      |
| **Data Source** | [TikTok Ads](/sources/tiktok) |
| **Aggregation** | Ratio                         |

***

## Example

Your TikTok awareness campaign spent **\$1,800** last week and drove **600 search events** on your site.

| Campaign        | Spend       | Searches | Cost/Search |
| --------------- | ----------- | -------- | ----------- |
| Spring Lookbook | \$1,200     | 480      | \$2.50      |
| New Arrivals    | \$600       | 120      | \$5.00      |
| **Total**       | **\$1,800** | **600**  | **\$3.00**  |

***

## How It Works

TikTok tracks search events through its Pixel or Events API when users perform on-site searches after interacting with your ad. Upstack calculates cost per search by dividing your total TikTok ad spend by the number of attributed search events during the selected period.

***

## When to Use

| Scenario                              | Action                                                         |
| ------------------------------------- | -------------------------------------------------------------- |
| Evaluating brand awareness efficiency | Compare cost/search across campaigns to find best performers   |
| Creative testing                      | Lower cost/search signals more curiosity-driven engagement     |
| Audience optimization                 | Identify which audiences explore your catalog most efficiently |
| Budget allocation                     | Shift spend toward campaigns with lower cost per search        |

***

## Related Metrics

| Metric                                                                                                  | Relationship                                          |
| ------------------------------------------------------------------------------------------------------- | ----------------------------------------------------- |
| [TikTok Searches](/reference/metrics/advertising/tiktok/tiktok-conversions/tiktok-searches)             | The denominator—total search events                   |
| [TikTok CPA](/reference/metrics/advertising/tiktok/tiktok-efficiency/tiktok-cpa)                        | Cost per purchase—measures full conversion efficiency |
| [TikTok Searches Value](/reference/metrics/advertising/tiktok/tiktok-conversions/tiktok-searches-value) | Monetary value of search activity                     |

[See all TikTok Conversions metrics →](/reference/metrics/advertising/tiktok/tiktok-conversions)