Watch time for webinars and events: measuring real engagement

What is watch time?

Watch time is the number of minutes someone was actually present in a session, as opposed to whether they joined at all. Added up across attendees, it shows how much attention a session really earned.

How to calculate watch time

For each attendee, add up the minutes between each join and leave. Sum across attendees for total watch time, or divide by the number of attendees for average watch time:

Average watch time = total minutes attended ÷ number of attendees

Watch time vs attendance

Attendance counts heads; watch time counts attention. A session with 200 attendees who stayed 8 minutes each earned less attention than one with 120 attendees who stayed for 40, even though it looks bigger in a report.

Webinar engagement metrics beyond watch time

  • Retention curve: how the audience changed minute by minute.
  • Show-up rate: the share of registrations who attended.
  • Questions, chat messages and poll answers per attendee.
  • Follow-up actions: replays watched, links clicked, meetings booked.

Using watch time

Watch time per attendee is the basis for meaningful engagement segments: someone who stayed 50 minutes and asked a question needs a different follow-up from someone who left after five. Virtual Event Management Suite segments attendees by what they actually attended.

Last reviewed 2026-11-01.

Related terms

  • Retention curve — A retention curve shows how many people were still present at each moment of a session, as a share of the peak audience.
  • Engagement segment — An engagement segment groups event registrants by how deeply they took part, from no-shows to people who stayed throughout and asked questions, so the follow-up matches what each person actually did.
  • Drop-off point — A drop-off point is a moment in a session where departures suddenly speed up.

All glossary terms →