Watch time per user
Engagement metric. How often and how deeply do they use it?
What is watch time per user?
Watch time per user is the average number of minutes each active viewer streams in a period.
Active viewer: a user who played at least one video in the period.
How to calculate Watch time per user
Watch time per user = Total minutes watched ÷ Active viewers- Total minutes watched
- minutes of video played in the period
- Active viewers
- unique users who played at least one video in the period
Where definitions differ
| Variant | Formula | When to use it |
|---|---|---|
| Per viewer | Minutes ÷ Users who watched | Measures depth among viewers. |
| Per subscriber | Minutes ÷ Paying subscribers | Links engagement to the paying base, including subscribers who watched nothing. |
| Per day | Monthly minutes per viewer ÷ Days | Easier to compare across months. |
Watch time per user calculator
Example inputs: change them to your own numbers. The examples only make the calculator show a worked answer; they are not benchmarks or targets. Runs in your browser; nothing you type is sent anywhere.
- Watch time per viewer per month
- 180 min
- Watch time per viewer per day
- 6 min
Why do subscribers with low watch time matter?
Subscribers who watch little are the ones most at risk of cancelling at the next renewal, so watch time per subscriber works as an early churn signal. Track the share of subscribers below a minimum each month.
How Watch time per user differs by vertical
| EdTech | Video-led courses use minutes of lessons watched in a similar way. |
|---|---|
| Fintech | Not used. |
| OTT and streaming | A core engagement metric, read alongside churn. |
| Gaming | Not used, except for games with video rewards. |
Common mistakes
- Counting autoplayed previews as watch time.
- Dividing by all subscribers in one report and by viewers in another.
Questions
How do you calculate watch time per user?
Divide total minutes watched by active viewers in the same period. 9M minutes across 50k viewers in a month is 180 minutes per viewer, or 6 a day.
Should previews and trailers count as watch time?
Usually not. Autoplayed previews inflate the metric without showing intent; count them separately.
Per viewer or per subscriber?
Per viewer measures depth of use; per subscriber shows how much of the paying base actually watches. Both are useful if labelled.
Do I need an MMP to measure these metrics?
Not for all of them. Engagement and monetisation metrics come from product analytics and billing data, while metrics split by ad channel, such as CPI, ROAS or retention by source, need installs attributed to campaigns.
Are the calculator's example inputs benchmarks?
No. The example inputs only make the calculator show a worked answer when the page loads; they are not typical, good or target values. Replace them with your own numbers.
Does the calculator send my numbers anywhere?
No. It runs entirely in your browser, and nothing you type is stored or sent anywhere.