# Create Custom Measures in Data Lab

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This feature is only available with specific impact.com editions or add-ons. [Contact us](https://app.impact.com/secure/advertiser/support/customer-support-portal-flow.ihtml) to upgrade your account and get access!
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**Important:** We *highly* recommend you reference [Data Lab Introduction](https://help.impact.com/brand/what-would-you-like-to-learn-about/platform-features/multi-program-reports/data-lab-custom-reports/data-lab-introduction) before starting this article.
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1. From the left navigation menu, select ![](https://4048883401-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwMLlMoFBtKJa8ptd3zaw%2Fuploads%2Fgit-blob-230534471fef5f40808e921e41ee44e4a06ded03%2Fe6cb9548999afdc1ed3ce4942e4cb5b45b5cecbd323267aac2a7cd1915fccc09.svg?alt=media) **\[Engage] → Reports** → **Data Lab**.
2. Select a **visualization** to get started.
3. From the Dimensions and Measures section in the right toolbar, select ![](https://4048883401-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwMLlMoFBtKJa8ptd3zaw%2Fuploads%2Fgit-blob-6282f271b7521383385339243690b303086736d9%2F3b5a585dd2895bdf1c30d1236c72ba590dddd18717863b27074c8d313d05ae20.svg?alt=media) **\[Create Custom Measure]**.

   <div data-with-frame="true"><figure><img src="https://4048883401-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwMLlMoFBtKJa8ptd3zaw%2Fuploads%2Fgit-blob-173102adaa8cfcf862f8d557af628f369198ee3c%2Fb4318478d9ea897463583c55f6d4ea2801a984df176c8a3ae9da38dad037437d.png?alt=media" alt="" width="287"><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="https://4048883401-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwMLlMoFBtKJa8ptd3zaw%2Fuploads%2Fgit-blob-4e2eb56f7a0317e4afab899bcc5728b41c936979%2F156d94b4eae47d787101ad70424e4db735832f2f96a09cbe3ccfa3e08e408b05.svg?alt=media" 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="https://4048883401-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwMLlMoFBtKJa8ptd3zaw%2Fuploads%2Fgit-blob-682f69b59d795f611c2169cc47f340f51e726b2c%2Fb1a222f6c6d17d9791df61ecf606e2a7f62ab61888c85bf415c15e5229e87989.png?alt=media" alt="" width="563"><figcaption></figcaption></figure></div>