Free Video Completion Rate Calculator
Get the percentage of started video plays that were watched to the end.
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How to use this tool
A video can rack up plays while most viewers drop off halfway, and raw view counts won’t show it. Video completion rate (VCR) is the share of started plays that reach the end, and this calculator works it out from two numbers in your report. It’s for marketers comparing video ad creatives, creators testing short-form edits and anyone who needs a clean percentage for a campaign recap.
- 01
Enter completed views
Type the number of plays that reached the end into Completed views, such as 4000. In ad reports this is usually the “played to 100%” figure.
- 02
Enter started views
Type the number of plays that began into Started views, such as 10000, from the same report and date range. Completed views can’t be higher than started views.
- 03
Calculate the completion rate
Select Calculate to see Rate as a percentage with the formula. Compare edits or ad versions one at a time, and select Copy to add the result to your report.
How video completion rate is calculated
Video completion rate = completed views ÷ started views × 100. The numerator is plays that reached the end; the denominator is plays that began. Using starts rather than impressions means the rate measures how well the video holds viewers, not how often it was shown. Worked example: 2,700 completions from 12,000 starts gives 2,700 ÷ 12,000 × 100 = 22.5%.
What counts as “completed” and “started”
Definitions vary by platform, so read your report’s labels before entering numbers: • Many ad platforms report plays reaching 25%, 50%, 75% and 100%; use the 100% figure as completed views. • Some metrics, such as Meta’s ThruPlay, count plays of at least 15 seconds as well as full plays, so they aren’t pure completions. • Some apps, including TikTok analytics, already show a “watched full video” percentage you can check against. Use the same definitions every time you compare videos.
What affects completion rate
• Length: shorter videos are easier to finish, so compare videos of similar length. • Opening: a slow first few seconds loses viewers before the message lands. • Pacing: dead air and repeated points cause drop-off midway. • Placement: skippable pre-roll ads, autoplay in a feed and muted playback all change who keeps watching. • Targeting: a better-matched audience is more likely to stay to the end.
Completion rate and related video metrics
Completion rate tells you how many plays reached the end, but not how long the rest lasted. Pair it with average view duration and average percentage viewed to see the full picture, and use the audience retention graph to find exactly where viewers leave. In advertising, view-through rate is a related but different metric, often based on impressions rather than starts.
Frequently asked questions
What is a video completion rate calculator?
A video completion rate calculator shows what share of started plays were watched to the end. This one divides completed views by started views and multiplies by 100. It’s commonly used for video ads, short-form clips and any content where finishing matters.
How do I calculate video completion rate?
1. Find the number of plays that reached the end. 2. Find the number of plays that started. 3. Divide completed views by started views. 4. Multiply by 100. For example, 1,500 ÷ 6,000 × 100 = 25% completion rate.
What is a good video completion rate?
It depends on video length, platform, placement and audience, so there’s no single target. A 6-second ad and a 3-minute explainer will naturally finish at very different rates. Compare against your own videos of similar length and placement, and look for improvements between versions.
What’s the difference between completion rate and view-through rate?
Completion rate divides completed views by plays that started. View-through rate is defined differently by different ad platforms and is often calculated against impressions, so it can be much lower for the same video. Check how your platform defines it before comparing the two.
Is completion rate the same as average percentage viewed?
No. Completion rate counts how many plays reached the end. Average percentage viewed is the average share of the video watched across all plays, including people who left early. A video can have a low completion rate but a decent average percentage viewed if most viewers watch most of it.
Why do I get an error when completed views are higher than starts?
Every completed play must also have started, so completed views can’t exceed started views and the calculator asks you to check the values. If your report shows more completions, it may be counting loops or replays differently. Use figures that share the same definition and date range.
Where can I find completed views?
Video ad reports usually show plays at 100% or “video completions”. Organic analytics differ: some apps show a full-watch percentage, while YouTube Studio focuses on audience retention and average percentage viewed. Use whichever completion figure your platform provides, along with its matching start count.
How can I improve my video completion rate?
1. Hook viewers in the first two or three seconds. 2. Trim intros, pauses and repeated points. 3. Put the key message early in case viewers leave. 4. Add captions so muted viewers can follow. 5. Test a shorter cut against the current version.
Are my video stats uploaded anywhere?
No. The calculation runs in your browser with only the two numbers you type, and the tool doesn’t connect to any ad or analytics account. Nothing you enter is sent to a server, and Clear empties the fields.
Is the video completion rate calculator free?
Yes. It’s free with no signup, login or download. Enter completed and started views, select Calculate and compare as many videos as you like.
For developers
Compare public video posts across platforms
Use SocQ APIs to collect public posts and profiles across Instagram, TikTok, YouTube and LinkedIn, such as public views and engagement on video posts, to benchmark creative ideas. Completion and retention data stay in each platform’s private analytics and aren’t available through the API.
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