Optimal Explainer Video Length Guide (2026)

The ideal explainer video length is 60 to 90 seconds for most homepage and marketing use. As a rule of thumb, script about 150 spoken words per minute, so a 90-second video runs roughly 225 words. Ads and social cuts work best at 15–30 seconds, while onboarding and demo videos can justifiably run longer.

Length is the single most argued-over decision in a video project, and usually for the wrong reason — teams add seconds to fit in more features. Here is how to decide by evidence instead of instinct.

Why shorter usually wins

Viewer attention decays fast, and every extra second is a chance to lose the person before your call to action. The discipline of 60–90 seconds forces one clear message instead of five half-made ones. If you cannot explain the core value in 90 seconds, the problem is almost always the script’s focus — not the runtime. Adding time rarely fixes a clarity problem; it usually hides it.

Explainer video length by placement

There is no single right length — there is a right length for each place the video will live. Match the runtime to the viewer’s intent at that moment.

The word-count method

Instead of guessing, write the script first and count the words. At a natural pace of about 150 words per minute: 30 seconds is roughly 75 words, 60 seconds about 150 words, and 90 seconds around 225 words. If your script runs long, cut ideas — do not speed up the voiceover. A rushed read is one of the most common reasons a technically fine video underperforms.

Nobody ever complained that an explainer video was too short. They complain it was confusing — and confusion almost always comes from trying to say too much.

Bilal Ali, Founder & Creative Director, ExplainerCue

A 90-second example

When longer is justified

Length is not a virtue, but it is not a sin either. A detailed product demo video, a technical deep-dive for an engineering audience, or an onboarding series can and should run longer, because the viewer has already raised their hand. The 60–90 second rule is for the first touch — the moment a stranger decides whether to keep paying attention. Once they have opted in, earned attention buys you more time.

Length also interacts with budget: see how explainer video cost works, and if you are new to the format, start with what an explainer video is. Need help scripting to length? Get a free consultation and we will recommend the right runtime for your goal.

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