The 9 Best YouTube Keyword Tools in 2026 (Free and Paid), and How to Use Them

A YouTube keyword tool helps you find the phrases people type into YouTube before you script a video, so you pick topics with real demand and title them the way viewers search. YouTube is a search engine in its own right: its help page on how YouTube search works explains that results are ranked on relevance, engagement and quality. Keywords feed the first of these three signals. This ranking compares the main free and paid tools in October 2026, with their real strengths and limits, then gives a step-by-step method you can apply this week.

How did we choose these YouTube keyword tools?

We kept tools that are widely used, actively maintained and that give data about YouTube specifically, not only about Google web search. Each tool was assessed on four criteria:

• Data source: first-party YouTube data, sampled data or third-party estimates.
• Volume information: exact, relative or estimated, and how much you can trust it.
• Ease of use: inside YouTube, in the browser or in a separate interface.
• Cost: free, freemium or paid. Prices change often, so we only state whether a free version exists and send you to the official pricing page for the rest.

Sorank, the software that publishes this blog, is not a YouTube keyword tool, so it does not appear in this ranking.

The 9 best YouTube keyword tools at a glance

1. YouTube search autocomplete: the free starting point

Type the start of a topic in the YouTube search bar and note the suggestions. They come from what people actually search on YouTube, in your language and country. Add letters after your seed (for example "home workout a", "home workout b") or questions ("how to", "why") to widen the list.

Strengths: real viewer phrasing, free, always current. Limits: no volume, no difficulty, and suggestions are influenced by your own history, so use a private window for cleaner results.

2. YouTube Studio Trends tab: ideas from your own audience

In YouTube Studio, the analytics section includes a Trends tab (earlier called Research or Inspiration, depending on the account). According to the YouTube Help page on the Trends tab, it shows top searches from your audience and from viewers across YouTube over the last 28 days, an audience interest level from very low to very high, breakout videos from similar channels and content gaps, cases where viewers cannot find enough quality results for a search.

Strengths: first-party data tied to your audience, content gaps that point to underserved topics. Limits: interest is relative, not a monthly volume, some insights are limited to certain countries and languages, and the content gaps card currently focuses on Shorts.

3. YouTube search terms report: what already works

For each video, the Reach tab of YouTube Studio includes a "Traffic source: YouTube search" card that lists the terms viewers typed before watching. At channel level, the advanced analytics mode shows the same data for all your videos.

Strengths: the only source showing the exact queries that brought you views. Limits: it only covers videos you have already published, so it is useless for a brand new channel. Use it to rework titles and descriptions and to find follow-up videos.

4. Google Trends with the YouTube Search filter

In Google Trends, switch the property filter from "Web Search" to "YouTube Search" to compare several terms on YouTube, by country and over time. The Google Trends data FAQ explains that values are normalised on a 0 to 100 scale and come from a sample of searches.

Strengths: free, ideal to choose between two phrasings, spot seasonal peaks and see rising queries. Limits: relative values only, and terms with low demand often return no data.

5. vidIQ: scores inside YouTube

vidIQ is a browser extension and web app built for YouTube creators. It shows keyword scores, estimated search volume and competition next to YouTube results and in your Studio, plus daily video ideas and AI-assisted title suggestions.

Strengths: data appears where you work, quick to read for beginners, useful competitor views. Limits: the free version gives only a few keyword results; volumes are estimates, so compare them with YouTube's own signals. Check the official pricing page for current plans.

6. TubeBuddy: Keyword Explorer and testing

TubeBuddy is the other long-standing YouTube extension. Its Keyword Explorer gives a keyword score, related searches and competition, and the paid plans add features such as A/B tests on thumbnails and titles and bulk editing of descriptions.

Strengths: integrated into the YouTube interface, strong on optimising and testing existing videos. Limits: reviews in 2026 disagree on whether a free plan is still listed, and the free tier, where available, shows only a handful of results. Check the official pricing page before choosing.

7. Ahrefs Keywords Explorer (YouTube mode)

Ahrefs, known for web SEO, lets you select YouTube as the search engine in Keywords Explorer. It returns estimated monthly search volumes and clicks for many countries, with filters to build large keyword lists. In October 2026, the separate free YouTube keyword tool on Ahrefs' site displays a maintenance notice, so the full data sits in the paid product.

Strengths: estimated volumes at scale, useful when you plan a full content programme across video and web. Limits: paid, built for web SEO first, no video-level analysis such as retention or thumbnails.

8. Keyword Tool: long-tail ideas at scale

Keyword Tool (keywordtool.io) collects YouTube autocomplete suggestions for a seed term, in many languages and countries, and returns hundreds of variations in seconds. Search volume, trends and export are reserved for the paid version.

Strengths: fastest way to build a long list of long-tail phrases. Limits: the free version gives no volume, and the list needs manual sorting by intent.

9. Semrush Keyword Magic Tool: video topics that also rank on Google

Semrush does not offer a YouTube-specific database in its Keyword Magic Tool; its volumes reflect Google web search. It is still useful for one job: finding queries where Google shows video results, such as tutorials and "how to" searches, so one video can earn views on YouTube and visibility in Google.

Strengths: rich Google data, intent and difficulty. Limits: no YouTube volumes, paid beyond a few daily searches, so it only makes sense if you also work on web SEO.

How do you do YouTube keyword research step by step?

Tools only help if you follow a method. Here is a sequence that works with free tools alone:

1. List five to ten seed topics your audience cares about, based on your expertise and on the questions your customers ask.
2. Expand each seed with YouTube autocomplete and Keyword Tool, and keep the phrases that sound like real questions.
3. Check demand in the Studio Trends tab and in Google Trends with the YouTube Search filter, and drop phrases with no measurable interest.
4. Look at the current results: search each phrase on YouTube and note the age, length and view count of the top videos. Old or weak videos signal an opportunity.
5. Pick one main phrase per video and use it naturally in the title, the first lines of the description, the spoken script and the chapters.
6. Review the search terms report four to six weeks after publishing, then adjust the title or plan a follow-up video.

Our guide to long-tail keywords explains why specific phrases with lower demand often bring more engaged viewers than broad terms.

Free or paid: which YouTube keyword tool should you choose?

A new or small channel can do everything with the four free tools: autocomplete, the Trends tab, the search terms report and Google Trends. Paid extensions such as vidIQ or TubeBuddy save time once you publish every week and want scores in one place. Ahrefs, Keyword Tool and Semrush make sense for teams that run a video channel and a website together and need estimated volumes for planning.

Whatever the tool, remember that YouTube ranks videos on relevance, engagement and quality. A keyword gets your video into the right results; the title, thumbnail, first seconds and watch time decide whether it stays there. Our YouTube SEO and GEO guide covers these on-video factors, and our article on YouTube marketing for businesses covers formats, publishing pace and measurement.

How do YouTube keywords connect with your website?

Video keywords and web keywords overlap more than most creators think. Many "how to" queries show videos in Google results, and AI assistants regularly cite YouTube videos in their answers. A video that answers a query well can support a blog article on the same topic, and the article can embed the video. Start your web research with a free keyword suggestions tool to see which video topics also have demand on Google.

Conclusion

The best YouTube keyword tool starts with YouTube itself: autocomplete for phrasing, the Studio Trends tab for audience demand and content gaps, the search terms report for what already brings views, and Google Trends for comparisons. vidIQ and TubeBuddy add convenient scores, while Ahrefs, Keyword Tool and Semrush help with estimates and larger plans. Sorank is not a YouTube keyword tool. It can, however, connect your YouTube channel and embed your videos in the articles its AI blog article generator writes and publishes on your site.