> ## 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.

# trial_converted Event

> Track when a trial converts to a paid subscription.

Fires when a trial converts to a paid subscription. This is a key conversion event for measuring trial success.

## JavaScript

```javascript theme={null}
window._upstack('track', 'trial_converted', {
  accountId: 'acct_abc123',
  subscriptionId: 'sub_def456',
  planId: 'plan_pro_monthly',
  planName: 'Pro Plan',
  mrr: 9900,
  billingInterval: 'month'
});
```

## Properties

| Property        | Type   | Required | Description                        |
| --------------- | ------ | -------- | ---------------------------------- |
| accountId       | string | Yes      | Account identifier                 |
| subscriptionId  | string | Yes      | New subscription ID                |
| planId          | string | Yes      | Converted plan identifier          |
| planName        | string | No       | Plan display name                  |
| mrr             | number | No       | Monthly recurring revenue in cents |
| billingInterval | string | No       | `month` or `year`                  |

## When to Fire

* After first successful payment
* When Stripe subscription status changes from `trialing` to `active`
* After payment method is charged successfully

<Tip>
  Track `mrr` to measure trial-to-paid conversion value and calculate average revenue per converted trial.
</Tip>