# Create Custom Measures in Data Lab

{% hint style="success" %}
This feature is on accessible to specific impact.com editions or add-ons. [Contact us](https://app.impact.com/support/portal.ihtml?createTicket=true) to upgrade your account and get access.
{% endhint %}

{% hint style="warning" %}
**Important:** We *highly* recommend you reference [Data Lab Introduction](/brand/what-would-you-like-to-learn-about/platform-features/multi-program-reports/data-lab-custom-reports/data-lab-introduction.md) before starting this article.
{% endhint %}

1. From the left navigation menu, select ![](/files/CDnwOBeIdds9r3Z6zTnO) **\[Engage] → Reports** → **Data Lab**.
2. Select a **visualization** to get started.
3. From the Dimensions and Measures section in the right toolbar, select ![](/files/Gl8lj5gLPbgSXGH8yWYa) **\[Create Custom Measure]**.

   <div data-with-frame="true"><figure><img src="/files/gJTWgjees2t25Z8F0oyc" alt="" width="355"><figcaption></figcaption></figure></div>
4. Name your custom Measure — the example below will show a measure called *Conversion Rate*.
5. Select your measure’s **Format**. You can choose between *Number*, *String*, *Percentage*, or *Currency*.
6. In the *Formula* field, enter the calculation for the custom measure.

   <div data-gb-custom-block data-tag="hint" data-style="info" class="hint hint-info"><p><strong>Example:</strong> The <em>Conversion Rate</em> measure will use <code>Actions Costs / Clicks</code>. impact.com will specify whether the formula is valid or not by a small <img src="/files/ZQArUgov9SVRGQNwvW6D" alt=""> <strong>[check mark]</strong> at the top-right of the window.</p></div>
7. Select **Save** to save your custom measure.

   <div data-with-frame="true"><figure><img src="/files/VDVCrIkiVA5Ej1WPAdm8" alt="" width="563"><figcaption></figcaption></figure></div>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help.impact.com/brand/what-would-you-like-to-learn-about/platform-features/multi-program-reports/data-lab-custom-reports/create-custom-measures-in-data-lab.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.