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Video Completion Rate (VCR) Calculator

Marketing

Calculate your video ad completion rate instantly. Enter video starts, completions, and total spend to find VCR, drop-off rate, and cost per completed view.

1100,000,000
0100,000,000
$1$1,000,000

Video Completion Rate

65.00%
Drop-off Rate
35.00%
Cost per Completed View
$0

This calculator computes your Video Completion Rate, Drop-off Rate, Cost per Completed View from the values you enter.

Inputs
Video StartsVideo CompletionsTotal Ad Spend
Outputs
Video Completion RateDrop-off RateCost per Completed View

What is a VCR?

A Video Completion Rate Calculator measures what percentage of viewers who started watching a video ad stayed through to the end — the standard engagement metric for video advertising, commonly abbreviated VCR. It's calculated simply as completions divided by starts, but interpreting that number correctly requires understanding your specific ad format, since skippable and non-skippable placements produce very different baseline completion rates.

This calculator goes beyond the raw percentage by also computing drop-off rate (the inverse, showing what share of viewers left before the message finished) and cost per completed view, which reveals how much you're actually paying for viewers who watched the full ad rather than just the platform's minimum counted view threshold used for CPV billing.

Completion rate matters differently depending on campaign objective. For message-heavy video ads — detailed product explanations, brand storytelling, complex offers — a high completion rate confirms the full message actually reached viewers. For simpler, punchier creative, a lower completion rate might be acceptable if the key message lands in the first few seconds regardless of whether viewers watch to the end, since click-through rate rather than completion is the more relevant success metric for that kind of direct-response format.

How to use this VCR calculator

  1. Enter your Video Starts — the total number of times the video began playing.
  2. Enter your Video Completions — the number of times viewers watched all the way through.
  3. Enter your Total Ad Spend for the campaign.
  4. Read the Video Completion Rate result and compare it against typical benchmarks for your specific ad format and length.
  5. Check Drop-off Rate to understand the scale of the attention-loss problem, if any.
  6. Review Cost per Completed View to see the real cost of securing a full watch-through, and compare creative variants to identify your most engaging cut.

Formula & Methodology

Video Completion Rate (VCR) = Video Completions ÷ Video Starts × 100

Drop-off Rate = 100% − VCR

Cost per Completed View = Total Spend ÷ Video Completions

Worked example: A campaign with 100,000 video starts, 65,000 completions, and $1,500 total spend:

VCR = 65,000 ÷ 100,000 × 100 = 65%

Drop-off Rate = 100% − 65% = 35%

Cost per Completed View = $1,500 ÷ 65,000 = $0.0231

A 65% completion rate sits in a solid range for many skippable video formats, though the right benchmark ultimately depends on your specific ad length and placement.

Frequently Asked Questions

Video completion rate is the percentage of viewers who watch a video ad all the way through, out of everyone who started watching it. It's calculated as video completions divided by video starts, and is one of the primary engagement metrics for video advertising, particularly for non-skippable formats where every start represents a real opportunity for the message to land in full.
VCR = Video Completions ÷ Video Starts × 100. For example, a video ad that starts 100,000 times and is watched to completion 65,000 times has a VCR of 65%. This calculator also computes drop-off rate and cost per completed view from the same inputs.
Completion rates vary significantly by format and placement — in-stream non-skippable ads often see 70–95% VCR since viewers have limited ability to leave, while skippable pre-roll or social feed video ads more commonly see 20–50% VCR since viewers can exit at any point. Shorter ads (6–15 seconds) also tend to post meaningfully higher completion rates than longer formats (30+ seconds).
Video completion rate measures attention retention — whether viewers watched the whole message — while [click-through rate](/ctr-calculator/) measures direct response, whether viewers took an action after seeing the ad. A video can have a high VCR (viewers watched fully) but a low CTR (they didn't click anything), which is normal and expected for brand-awareness-focused video campaigns rather than direct-response campaigns.
Drop-off rate — the inverse of completion rate — tells you what share of your audience left before the message finished, which matters for understanding where in the video attention is being lost. If most drop-off happens in the first few seconds, the issue is likely a weak hook; if it's spread evenly throughout, the video may simply be too long for the format and platform.
CPV (Cost Per View) is generally billed based on the platform's own view-counting threshold, which is often a partial watch (like YouTube's 30-second or full-ad rule), while cost per completed view specifically measures spend against only the full completions this calculator counts. Comparing your CPCV against your standard [CPV](/cpv-calculator/) figure reveals how much more expensive it is to secure a full watch-through versus the platform's minimum counted view.
Common causes include a weak opening few seconds that fails to hook attention, video length mismatched to the platform and placement (long videos in fast-scrolling social feeds), poor audience targeting showing the ad to uninterested viewers, and creative that front-loads the brand message before establishing viewer interest. Testing shorter cuts or stronger opening hooks is usually the fastest way to improve completion rate.
Enter your Video Starts, Video Completions, and Total Spend for the campaign you're evaluating. The calculator instantly returns your Video Completion Rate, Drop-off Rate, and Cost per Completed View.
Yes, even though skippable formats naturally see lower completion rates, tracking VCR still reveals whether your creative is compelling enough to hold attention when viewers have an easy exit option. A skippable ad with an unusually high completion rate for its format is a strong signal the creative itself is performing exceptionally well.
For creators monetizing content, video completion and overall watch time directly influence how the platform's algorithm surfaces content and, in turn, affects total views and ad revenue — see the [YouTube Earnings Calculator](/youtube-earnings-calculator/) for how views and RPM translate into creator income. Advertisers and creators both care about completion rate, but for different reasons: advertisers want message delivery, creators want algorithmic reach.
It depends on campaign goals — brand awareness campaigns generally prioritize reach and frequency across a wide audience even at a lower completion rate, while message-heavy campaigns (detailed product explanations, complex offers) need higher completion rates to ensure the full message actually lands. Balancing the two often means testing shorter, higher-completion-rate cuts for broad reach placements and longer, more detailed cuts for retargeting audiences already familiar with the brand.
Also known as
VCR calculatorvideo completion rate calculatorvideo ad drop-off calculatorcost per completed viewCPCV calculator