> ## 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.

# Sign Up: Account Registration Events

> Track sign up events on your site. Measure account registrations and user acquisition to optimize your conversion funnel.

<Tip>
  Sign Up counts the total number of account registration events tracked by the Upstack pixel.
</Tip>

## Formula

<Info>
  **Sign Up** = **COUNT** ( Sign Up Events )
</Info>

### Formula Components

| Metric             | Definition                                                                   |
| ------------------ | ---------------------------------------------------------------------------- |
| **Sign Up Events** | Individual account registration events fired when visitors create an account |

| Metadata        |                         |
| --------------- | ----------------------- |
| **Type**        | Number                  |
| **Data Source** | [Upstack Pixel](/pixel) |
| **Aggregation** | Count                   |

***

## Example

Your e-commerce store tracked **2,847 sign ups** in March, indicating strong interest in account creation.

| Week   | Sign Ups | Change |
| ------ | -------- | ------ |
| Week 1 | 623      | —      |
| Week 2 | 712      | +14.3% |
| Week 3 | 758      | +6.5%  |
| Week 4 | 754      | -0.5%  |

***

## How It Works

Sign up events are tracked when visitors complete account registration on your site. The Upstack pixel fires a `sign_up` event each time a visitor successfully creates an account, capturing the moment of conversion from anonymous visitor to registered user.

***

## When to Use

| Scenario                               | Action                                                    |
| -------------------------------------- | --------------------------------------------------------- |
| Tracking account growth                | Monitor sign ups over time to measure user acquisition    |
| Optimizing registration flow           | Compare sign up rates before and after form changes       |
| Measuring campaign effectiveness       | Track sign ups attributed to specific marketing campaigns |
| Identifying high-value traffic sources | Compare sign up rates across different channels           |

***

## Related Metrics

| Metric                                                                               | Relationship                                             |
| ------------------------------------------------------------------------------------ | -------------------------------------------------------- |
| [Complete Registration](/reference/metrics/funnel/conversions/complete-registration) | Similar registration event, may include additional steps |
| [Login](/reference/metrics/funnel/engagement/login)                                  | Measures returning user engagement after sign up         |

[See all Engagement metrics →](/reference/metrics/funnel/engagement)