Free YouTube Keyword Tools: What Each One Actually Gives You Free
Every free YouTube keyword tool gives you keyword ideas. Almost none gives you search volume — because YouTube doesn't publish it, so the estimate is the product, and the product is what vendors charge for.
This page compares eight free YouTube keyword tools on one question: what does the free tier verifiably include? Every claim below links to the vendor's own page — no invented limits, no invented prices, no star ratings we can't source. If you want the research method rather than the tool comparison, read the YouTube keyword research guide instead. This page is about which tool to open.
TL;DR — Key Facts
- • Best free tool for ideas: YouTube autocomplete, then Keyword Tool.io — its free version generates over 750 long-tail keywords from YouTube autocomplete, no account.
- • Best free tool for trend direction: Google Trends with the YouTube Search property.
- • Best free first-party tool: YouTube Studio's Trends tab — shows what your audience and viewers across YouTube search for, plus content gaps.
- • No free tool shows YouTube search volume. Keyword Tool.io puts volume on paid; TubeBuddy lists estimated monthly search volume as a paid Keyword Explorer feature; vidIQ's free tier is credit-metered.
- • Google Keyword Planner is free but not a YouTube tool — its Avg. monthly searches metric measures Google's Search Network, not YouTube search.
- • “TubeBuddy free alternative” usually means a limit, not a grudge — swapping free tools doesn't buy you the missing signal.
Free YouTube Keyword Tools Compared
The only column that matters is the third one. Sort by it and the market gets very simple.
| Tool | Account needed | Search volume on free? | Best for |
|---|---|---|---|
| YouTube autocomplete | None | No | Seed expansion and long-tail discovery, at zero cost, with no signup |
| YouTube Studio — Trends tab | A YouTube channel (free) | No | Finding demand YouTube itself sees, including content gaps in your niche |
| Google Trends (YouTube Search) | None | No | Checking whether a keyword is rising, seasonal or dying before you commit |
| Keyword Tool.io | None for the free suggestions | No | Bulk long-tail lists you paste into a sheet and prioritise yourself |
| Ahrefs Free Keyword Generator | None stated on the free generator | No | A quick, credible free lookup when you already trust Ahrefs’ data pipeline |
| vidIQ Free | Free vidIQ account | No | Creators who want scores and ideas rendered on the YouTube page they are already looking at |
| TubeBuddy Free | Free TubeBuddy account + browser extension | No | Beginners who want a guided score rather than a raw keyword list |
| Google Keyword Planner | Google Ads account with billing details entered | Not for YouTube | Sizing Google-search demand for a topic you also plan to cover on YouTube |
Free-tier details verified against each vendor's own documentation — sources linked in every card below. Where a vendor doesn't publish a limit, we say so rather than guess.
The Tools in Detail
YouTube autocomplete
Volume on free: NoThe demand signal every other free tool is built on top of
Unlimited keyword suggestions, straight from the YouTube search box. Type a seed phrase and YouTube completes it with queries real viewers type.
- • Suggestions are ordered, not scored — you get relative popularity hints, never a number.
- • Most “free YouTube keyword tools” are autocomplete scrapers with a nicer interface on top.
YouTube Studio — Trends tab
Volume on free: NoYouTube’s own first-party research surface
Free with any channel. YouTube’s help centre describes the Trends tab (Studio → Analytics → Trends) as a way to explore what your audience and viewers across YouTube are searching for, and to spot content gaps — searches where viewers can’t find enough quality results.
- • Data is anchored to your channel and its audience — it will not research a niche you have never published in.
- • No exportable volume figures; it is a discovery surface, not a spreadsheet.
Google Trends (YouTube Search)
Volume on free: NoFree relative interest and seasonality, filtered to YouTube
Google Trends lets you switch the search property from Web Search to YouTube Search, so the interest curve reflects YouTube queries rather than Google ones. Free, unlimited, no account.
- • Values are indexed 0–100 relative interest, not searches per month — you can compare terms, not size them.
- • The single most under-used free tool on this list, because the YouTube property is one dropdown deep.
Keyword Tool.io
Volume on free: NoThe highest-volume free suggestion dump
Keyword Tool states its free version generates “over 750 long-tail keywords from YouTube autocomplete” without creating an account. Search volume is a paid feature: the site notes that “while the free version of Keyword Tool generates hundreds of keyword suggestions, understanding the search volume behind those keywords is equally important” — volume, historical trend, bulk upload and export sit on the paid tier.
- • Best free-to-effort ratio if all you want is raw phrase volume (as in: number of phrases, not searches).
- • Every keyword arrives unranked — you still have to decide what is worth making.
Ahrefs Free Keyword Generator
Volume on free: NoThe answer to “ahrefs free keyword tool youtube”
Ahrefs’ free keyword generator is not Google-only: the page says you can “research keyword ideas in eight other search engines: YouTube, Bing, Yahoo, Amazon, Baidu.” Free to use.
- • Ahrefs does not publish the free generator’s per-search or per-day limits on that page, so treat it as a sampler rather than a workflow.
- • Ahrefs also runs a dedicated YouTube keyword tool page — the deep data behind it is a paid product.
vidIQ Free
Volume on free: NoFree tier + browser overlay on YouTube itself
vidIQ’s pricing page states that “vidIQ offers a free tier that includes limited access to our most popular tools,” listing 150 AI credits every month, niche trends, data-backed content ideas and AI Coach tips. Personalised keyword ideas and unlimited trends research are listed under the paid Boost plan; Max is listed at $39/month billed yearly.
- • The free tier is metered in AI credits, so heavy research months hit the ceiling.
- • Its keyword depth is the upsell — the free plan is a demo of the paid plan, by design.
TubeBuddy Free
Volume on free: NoThe free plan people mean by “TubeBuddy free alternative”
TubeBuddy publishes a free plan covering essential tools including keyword research. Its Keyword Explorer works on the free plan for basic results, while the full score breakdown, estimated monthly search volume and the related-keywords panel are described as paid-plan features.
- • TubeBuddy does not publish free-tier search caps in a stable, citable place — check the plan page before you build a workflow on it.
- • If you are searching for a “TubeBuddy free alternative,” you are usually hitting the free plan’s result limits, not disliking the tool.
Google Keyword Planner
Volume on free: Not for YouTubeFree — but it is not a YouTube keyword tool
Keyword Planner lives inside Google Ads. Google’s help centre is explicit that “you must complete your account setup by entering your billing information to access basic features like ‘Get ideas for new keywords’.” Its Avg. monthly searches metric is defined against the location and Search Network settings you select — Google Search, not YouTube search.
- • The old “Google AdWords Keyword Tool” is now Keyword Planner — same lineage, still no YouTube search volume.
- • Useful as a topic-demand proxy. Dangerous if you read its numbers as YouTube numbers.
Why No Free YouTube Keyword Tool Shows Search Volume
YouTube does not publish search volume for keywords. There is no official endpoint, no public report, nothing to look up. Every YouTube volume figure you have ever seen — in vidIQ, TubeBuddy, Keyword Tool, anywhere — is a modelled estimate that a vendor built and maintains at real cost.
That single fact explains the entire shape of this market. Keyword suggestions are cheap: they come from autocomplete, which is free and public, which is why every free tool has them and why they all return roughly the same phrases. Volume estimates are expensive, so they sit behind the paywall — consistently, across vendors, with no exceptions worth naming. Keyword Tool.io says it directly: the free version generates the suggestions, and understanding the search volume behind them is the paid part.
The practical consequence: when you search for a “free keyword tool for YouTube,” you are usually looking for volume, and you will not find it free. What you can get free is ideas, trend direction, and a competition read from the SERP itself. That is genuinely enough to plan a channel's first 50 videos — it is just slower.
Is the Google AdWords Keyword Tool a YouTube Keyword Tool?
No — and this is the most common expensive mistake in free YouTube keyword research. The tool once called the Google AdWords Keyword Tool is now Google Keyword Planner, inside Google Ads. It is free to use, but two things about it disqualify it as a YouTube tool:
1. Its numbers are Google Search numbers
Google's documentation defines Avg. monthly searches as the average number of times people searched for a keyword and its close variants, based on the month range, location and Search Network settings you selected. That is Google's Search Network — not YouTube search. A keyword can be enormous on Google and near-dead on YouTube (people read recipes and watch repairs), and Keyword Planner cannot tell you which you are looking at.
2. “Free” requires billing details
Google Ads Help states that you must complete your account setup by entering your billing information to access basic features like getting ideas for new keywords. You don't have to spend, but you do have to hand over a card to use the free tool.
Use it for: checking whether a topic has Google demand you could also serve with a video that ranks in Google's video results. Don't use it for: sizing YouTube demand. For that, the honest free answer is Google Trends' YouTube Search property, which gives direction without pretending to give volume.
Free TubeBuddy and vidIQ Alternatives: What You're Actually Looking For
Searches like “TubeBuddy free alternative” and “alternative keyword tool” almost never mean “I dislike this tool.” They mean “I hit a limit.” Which limit you hit determines which alternative is actually a substitute — and in one case, whether a substitute exists at all.
| The limit you hit | The real alternative |
|---|---|
| Free plan caps how many keyword results you see | Keyword Tool.io's free version — over 750 YouTube autocomplete long-tails per search, no account. More phrases, still no volume. |
| You want the same in-page overlay, from a different vendor | vidIQ publishes a free tier with limited access to its most popular tools; TubeBuddy publishes a free plan covering keyword research basics. They are each other's closest free alternative. |
| You want free estimated search volume | No alternative exists. Volume is the paid product at every vendor because YouTube doesn't publish it. Switching free tools is a way of postponing this decision, not solving it. |
| You want to know if a keyword is rising or dying | Google Trends with the YouTube Search property — free, unlimited, and better at this specific job than any paid keyword tool's trend column. |
| You want to know if you can realistically rank | Search the keyword on YouTube and look at the channel sizes on page one. Free, and more reliable than any single difficulty score. |
| You want 300 candidates ranked by opportunity, not listed | This is the paid job. See below — and be honest that this is what you came for. |
The Free-Only YouTube Keyword Workflow (6 Steps)
Stacked in this order, the free tools cover for each other's gaps. No single tool does the job; the sequence does.
Harvest seeds from YouTube autocomplete
Type your topic into the YouTube search box and note every completion. Repeat with a-z suffixes and question words (how, why, best, vs). This is the only demand signal on this list that comes directly from YouTube searchers and costs nothing.
Bulk it out with a free suggestion tool
Paste each seed into Keyword Tool.io (free, no account, over 750 YouTube autocomplete long-tails per search) or the Ahrefs free keyword generator with YouTube selected. You now have hundreds of phrases and zero volume data — which is the correct order.
Kill the dying keywords with Google Trends
Run your shortlist through Google Trends with the search property set to YouTube Search. Anything on a flat or falling curve gets cut. This is free triage that most creators skip.
Cross-check against YouTube Studio Trends
Open Studio → Analytics → Trends. YouTube surfaces what your audience and viewers across YouTube are searching for, plus content gaps where viewers can’t find enough quality results. A survivor from step 3 that also appears here is a genuine candidate.
Score the survivors by hand, using SERPs not numbers
Search each keyword on YouTube. Look at who ranks: if the first page is all channels 50x your size, skip it. If small channels with modest view counts are ranking, the keyword is reachable. Free tools can’t tell you this — the SERP can.
Decide whether the missing number is costing you more than it saves
A free stack gets you phrases, direction and a competition eyeball. It cannot rank 300 candidates by opportunity in a minute. When your bottleneck becomes prioritisation rather than ideas, that is the moment a paid tool pays for itself — and not before.
When Free Stops Being Enough
Free tools fail at exactly one point, and it is worth naming precisely so you don't upgrade early. They do not fail at finding keywords — autocomplete finds the same phrases a paid tool finds. They fail at prioritisation: given 300 candidates, which 20 should this channel, at this size, make next?
That is the job OutlierKit's keyword research tool does: opportunity scores, growth trends, channel-size distribution on the SERP (so you can see whether a keyword is winnable at your size), saturation, and audience psychographics. Plans start at $29/month for Hobby, $49 for Pro and $199 for Max, and the free trial includes 10 credits — enough to run a real keyword set before deciding. See current pricing. OutlierKit is rated 4.9/5 on Product Hunt.
Our honest recommendation: if you publish less than once a week, or you are still finding your niche, stay free. The free stack above is sufficient and the bottleneck is your upload cadence, not your keyword data. Start paying when you are planning content in batches and the ranking step — not the ideas step — is what takes the afternoon.
This Page vs Our Other Keyword Pages
We publish four keyword pages that overlap in vocabulary and not at all in job. Pick the one that matches your actual question:
YouTube Keyword Research: Complete Guide — The method.
How to run the research process end to end — seed, expand, validate, prioritise, place the keyword, iterate. Go there if your question is “how do I do this?” rather than “which tool do I open?”
OutlierKit Keyword Research Tool — The paid product.
What OutlierKit's keyword research does — opportunity scores, channel-size distribution, saturation, psychographics. Go there once you've decided free isn't cutting it and want to see what the paid signal looks like.
Best YouTube Keywords by Niche — The answers, not the tools.
Actual keyword lists by niche. Go there if you want candidates handed to you rather than a tool to generate them yourself.
YouTube Niche Finder — One level up.
Keyword research assumes you've picked a niche. If you haven't — or you're deciding between two — start there, because keyword tools can't answer “what should this channel be about?”
Best YouTube Analytics Tools — The wider tool market.
Keyword research is one job among many. Go there for the full analytics tool landscape, free and paid.
Frequently Asked Questions
What is the best free keyword tool for YouTube?
There is no single best one, because free tools split into three jobs. For raw keyword ideas: YouTube autocomplete, or Keyword Tool.io, whose free version generates over 750 long-tail keywords from YouTube autocomplete with no account. For trend direction: Google Trends with the search property set to YouTube Search. For first-party demand and content gaps: YouTube Studio's Trends tab, free with any channel. vidIQ and TubeBuddy both publish free tiers that layer scores onto YouTube itself. The realistic answer is that you use two or three of them together, because no free tool does all three jobs.
Do any free YouTube keyword tools show search volume?
Effectively no. YouTube does not publish search volume, so every volume number you have ever seen in a YouTube tool is a third-party estimate — and vendors put those estimates behind the paywall because they are the expensive part. Keyword Tool.io states plainly that search volume is a paid feature on top of its free suggestions. TubeBuddy lists estimated monthly search volume as a paid-plan feature of Keyword Explorer. vidIQ's free tier is metered in AI credits with keyword ideas listed under its paid Boost plan. Google Keyword Planner does report volume for free, but it measures Google's Search Network, not YouTube search.
Is Google's AdWords keyword tool a YouTube keyword tool?
No. The tool once called the Google AdWords Keyword Tool is now Google Keyword Planner, inside Google Ads. Google's own documentation defines its Avg. monthly searches metric against the location and Search Network settings you select — that is Google Search, not YouTube search. Google also requires you to complete account setup by entering billing information before you can access basic features like getting ideas for new keywords. Use it to size Google demand for a topic. Do not read its numbers as YouTube demand: a keyword can be huge on Google and near-dead on YouTube, and vice versa.
What is a good free TubeBuddy alternative for keyword research?
It depends which limit pushed you out. If you hit TubeBuddy's free result limits and want more phrases, Keyword Tool.io's free version returns far more long-tail suggestions per search, and the Ahrefs free keyword generator supports YouTube alongside eight other search engines. If you want the in-page overlay experience, vidIQ publishes a free tier that includes limited access to its most popular tools. If you actually wanted the paid signal — estimated volume, competition, prioritisation — no free alternative provides it, and swapping between free tools is a way of not making that decision.
Are free YouTube keyword tools accurate?
Free suggestion tools are accurate about what they measure: autocomplete phrases are real queries YouTube itself completes, and Google Trends' YouTube property is real relative interest. They are not inaccurate — they are silent on the thing you want, which is how many people search a term and how hard it is to rank. Inaccuracy creeps in when creators substitute autocomplete ordering for volume, or read Google Keyword Planner's Search Network numbers as YouTube numbers. Free tools are honest tools used dishonestly.
Can I do YouTube keyword research with only free tools?
Yes, and for a channel's first months you probably should — the free stack (autocomplete → a free suggestion tool → Google Trends → Studio Trends → manual SERP check) produces a defensible content list without spending anything. What it costs you is time and prioritisation. You will look at a few hundred phrases with no way to rank them except judgement, and repeat that manually every planning cycle. Paid tools do not find keywords free tools cannot find; they rank them for you.
Related Guides
Free tools find keywords. OutlierKit ranks them.
Opportunity scores, growth trends and channel-size distribution — see which keywords your channel can actually win. Free trial includes 10 credits.
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