How Long Should a B2B Explainer Video Be? (Data-Backed Answer)

Why “how long” is the wrong question

The most common version of this question is “how long should my explainer video be.” It is also the wrong starting point.

The right question is: where will this video live, and what is the viewer doing when they see it. Your homepage visitor has different patience than your LinkedIn scroller, who has different patience than your YouTube subscriber. Each platform sets the attention budget. The script has to fit inside it.

After producing thousands of B2B videos and tracking retention curves across every major platform, we have learned the same thing every analytics dashboard shows. Length is not a creative choice. It is a placement decision. The video that converts at 3 percent on a homepage will convert at 0.4 percent on LinkedIn unless you cut it down to 45 seconds.

If you want to skip the analysis and get a length recommendation for your specific use case, our video length optimizer takes 2 minutes. Otherwise, here is the full breakdown.

Length by platform (full data)

Here is the complete reference table for B2B video length across every major placement. Use this when you are planning what cuts to produce from a single shoot.

If you want to ship videos at every length from a single production, that is exactly what an unlimited video editing service handles. One master gets cut into 8 to 12 platform specific videos as part of the standard workflow.

Homepage explainer: 60-90 seconds is the sweet spot

The homepage is your highest conversion intent video placement. The visitor has already clicked through from a search, an ad, or a link. They are evaluating whether to stay or bounce. Your video has 90 seconds before they decide.

In our retention data, 70 percent of homepage video viewers stay through the first 60 seconds. By 90 seconds, that drops to 50 percent. By 120 seconds, only 30 percent are still watching. The shape of the drop is consistent across SaaS, financial services, and consulting verticals.

If your script does not fit in 90 seconds, the script needs to be cut, not the video extended. We have seen the same script perform 2x better at 78 seconds than at 140 seconds for the exact same business. Compression forces clarity.

For pricing on a 60 to 90 second explainer, see our explainer video service ($1,800 for Core, $3,999 for Premium). For why most homepage videos fail beyond just length, see why B2B videos fail to convert.

LinkedIn: 30-90 seconds organic, 15-30 seconds ads

LinkedIn is a feed platform. Viewers are scrolling. Your video has roughly 1.5 seconds before they keep scrolling or stop. That changes the entire calculation versus a homepage where the viewer is already on your page.

The optimal length for LinkedIn organic B2B video is 30 to 90 seconds. The highest performing videos in our data sit between 45 and 60 seconds. Past 90 seconds, view through rate drops below 25 percent and engagement (likes, comments, shares) collapses with it.

For LinkedIn paid ads, drop the length to 15 to 30 seconds. The skip button on LinkedIn ads appears after 6 seconds, so the hook needs to land before then. 15 second cuts work for retargeting warm audiences. 30 second cuts work for cold audiences who need a problem statement before the offer.

For more on LinkedIn ads specifically, see why B2B video ads fail and what actually converts on LinkedIn. For ad creative production, our ad creatives service ships 8 to 12 ad variants per month with the right length for each placement.

YouTube: 8-12 minutes for long form B2B

YouTube works backwards from every other platform. Longer videos perform better than shorter ones. The algorithm rewards videos that retain viewers because they generate more ad watch time, which is how YouTube monetizes the platform.

For B2B SaaS channels, the sweet spot is 8 to 12 minutes per video. Top performing comparison videos (“X vs Y”), alternatives videos (“Top 10 alternatives to X”), and how to videos in this length consistently rank for buyer intent keywords and drive demo bookings.

The most common mistake on YouTube is cutting videos too short. B2B founders coming from LinkedIn habits ship 3 to 5 minute videos. Those videos underperform 9 minute videos by 3 to 5x in the YouTube algorithm. The platform actively suppresses short videos that should have been longer.

For a real B2B YouTube case study, see how Meridian Advisory grew from 40 to 12,000 subscribers in 90 days shipping 8 to 12 minute videos weekly. For agency selection, see how to choose a YouTube growth agency.

Short form: TikTok, Reels, Shorts

Short form video on TikTok, Instagram Reels, and YouTube Shorts has its own playbook. The algorithm on all three platforms favors loop completion. A video that ends and immediately replays signals to the algo that the content is sticky, which earns more reach.

For B2B short form, 15 to 35 seconds is the right window. 25 to 30 seconds is the highest performing length in our data. Below 15 seconds, the message rarely lands. Above 60 seconds, completion rate collapses and the video gets less reach.

A good YouTube growth service will cut 5 to 8 short form clips from each long form video, saving you the cost of producing short form separately.

Paid ads: 15-30 seconds, period

Paid ads have the strictest length rules. On every platform (Meta, LinkedIn, YouTube, TikTok), the cost per click and cost per conversion both rise dramatically past 30 seconds. Even when the platform allows longer ads, the economics break.

For a B2B SaaS that scaled paid creative without burning out, see how a fintech client tripled ROAS by shipping 10 fresh 15-30 second ad variants every two weeks. Length discipline plus refresh cadence drives most of the ROAS lift.

Length by funnel stage (TOFU, MOFU, BOFU)

Beyond platform, length should also match where the viewer is in their buying journey. The buyer at the awareness stage will give you 12 minutes. The buyer at the decision stage wants 60 seconds. Match length to intent.

For more on building a full funnel video strategy, see how B2B SaaS companies get demos from YouTube. And for SEO content that works alongside video at every stage, see our SEO content service.

Retention curves: where viewers actually drop off

Here is the retention curve we see across hundreds of B2B videos on a homepage placement. These are the points where you lose viewers, and they are remarkably consistent across industries.

The lesson from this curve is simple. Every second past 90 seconds costs you 15 to 20 percent of your audience. So your CTA, your strongest proof point, and your offer all need to be inside the 90 second mark. Anything after that is bonus content for the most invested viewers.

How to cut one master into platform lengths

You do not need to produce a separate video for every platform. The standard B2B workflow is one master shoot, then 8 to 12 derivative cuts. Here is how the cut sheet typically looks for a single 90 second master video:

This is the type of work an unlimited video editing subscription handles in standard workflow. A single master plus 8 to 12 cuts ships within 7 days under most plans. See unlimited video editing compared 2026 for service comparisons.

5 length mistakes that kill conversion

These are the most common length mistakes we see when auditing B2B videos. Each one cuts conversion 30 to 60 percent on its own.

Frequently asked questions