---
sourceDocument: Brazil Platform Analytics
sourceDocumentLink: https://www.servicenow.com/docs/r/now-intelligence

 Release :

    - brazil

ft:locale :

    - en-US

ft:publication_title :

    - Brazil Platform Analytics

ft:clusterId :

    - par

bundleId :

    - par

workflow :

    - Platform


---

# How durations are calculated in Usage Insights

# Duration calculations {#ariaid-title1}

Release version: Brazil  
Updated September 10, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
Durations in Usage Insights have specific calculations. Review these equations to understand the average duration per page and percentage time on site values.

## Average duration per page {#uxa-duration-calculations__section_zpy_npq_12c}

The average duration per page is calculated as the sum of the duration on a page divided by the count of impressions on that page minus the count of exits from that page.

For example, there are 10 appearances of the Dashboard Overview within the specified date range. They spend a total of 720 seconds on the page. On four of these appearances, the Dashboard Overview ended the session without
interaction on the page. Therefore, the calculation for average duration is 720 / 10 - 4 = 120 seconds.

## Percentage time on site {#uxa-duration-calculations__section_kym_4pq_12c}

The percentage time on site is calculated as the sum of duration on a page divided by the sum of all page durations multiplied by 100.

For example, the Service Portal application contains three pages tracked by Usage Insights: Home, Knowledge, and Request. The total time spent on the Home page in the specified date range is 900 seconds; on the Knowledge page, 300 seconds; on the Request page, 300 seconds. The
percentage time on the Home page is calculated as (900 / 900 + 300 + 300) \* 100 = 60%