SEO Guide
Keyword Research for SEO
What search volume, difficulty, CPC and intent actually tell you — and how to pick keywords you can realistically rank for.
The free keyword lookup is offline for now. Everything below still stands — and inside a project, RankBuddy runs this research for you and turns it into published content.
Start for freeAbout This Keyword Research Tool
This page is the reference behind our free keyword research tool: what each metric means, and how to turn it into a decision about what to write. The lookup itself is temporarily offline — nothing in the guidance below depends on it.
The numbers run on DataForSEO — the same data infrastructure premium SEO keyword research tools are built on: monthly search volume and cost-per-click sourced from Google Ads, and a 0–100 keyword difficulty score modeled on the backlink authority of the pages currently ranking. Search volume and CPC reflect United States, English-language search data — treat them as a comparison baseline between keywords rather than an exact traffic forecast for every market.
When the lookup is running, each search returns the seed keyword's own metrics plus 25 related keyword ideas, sorted by search volume so the highest-opportunity terms surface first.
How to Do Keyword Research
Four steps between a single seed term and a prioritized list of keywords worth writing for.
Start from one seed term
Pick a single term close to what your page or business is about — a product, a service, or a topic. Broad enough to have related searches around it, specific enough that the results still describe what you actually do.
Read the seed's own numbers first
Volume, difficulty, and CPC for the exact term are your baseline. Every other keyword is worth judging against that number rather than in isolation.
Expand into related terms
Pull the keywords that surround your seed and sort them by search volume, keeping difficulty and search intent beside each one — commercial, informational, transactional, or navigational.
Match difficulty to your site's authority
Prioritize the lower-difficulty rows even when the volume is modest — those are realistic to rank for now. Save the high-difficulty, high-volume terms for once you've built up authority.
What Each Metric Means
- Monthly search volume
- The average number of monthly searches for the term, from Google Ads data. No demand means no traffic, however well the page is written.
- Keyword difficulty
- A 0–100 score based on the backlink authority of the pages currently ranking. Low scores are realistic targets for newer sites; high scores need an established link profile first.
- Cost per click
- What advertisers pay per click on this term. Even without running ads, CPC is a clear proxy for how much commercial value a keyword carries.
- Search intent
- Whether searchers want to learn, compare, or buy. It decides the page format you need — matching intent matters more than volume.
More Tools Like This
Free, no-signup SEO tools to run alongside your keyword research.
Keyword research questions
Frequently asked questions
What is a keyword research tool?
A keyword research tool shows how often people search for a given term, how hard it would be to rank for it, and what it's worth commercially — search volume, keyword difficulty, and CPC. Instead of guessing which topics are worth writing about, you get the actual numbers behind each one before investing the time to write.
Can I run a keyword lookup on this page right now?
Not at the moment — the free lookup is temporarily offline, and the guide on this page is the part that still applies. When it returns it will be free on the same terms as before: no account, no email gate, no credit card. In the meantime keyword research is part of what a RankBuddy project does for you.
What data powers this SEO keyword research tool?
Search volume and CPC come from Google Ads data; keyword difficulty is calculated from the backlink authority of the pages already ranking for each term. It's the same category of data paid SEO platforms are built on, not an estimate scraped from autocomplete.
How do I use a keyword research tool for SEO content planning?
Start with one seed keyword close to your topic, then use the difficulty score to sort ideas into two buckets: low-difficulty terms to target now, and high-difficulty ones to revisit once your site has more authority. Group keywords that share the same search intent onto one page instead of publishing a separate thin page for each variation.
What counts as a good search volume?
It depends on intent and your market, not the raw number. A commercial keyword with 300 monthly searches can be worth more than an informational one with 30,000, if the smaller keyword's searchers are the ones actually ready to buy. Read volume next to intent and CPC rather than chasing the biggest figure on the page.
How accurate is keyword difficulty?
It's a relative signal, not a promise. A low score means the current page-one results are realistically beatable with solid content; a high score means you'd be competing against pages with substantial existing backlink authority. Use it to prioritize which keywords to attempt first, not as a guarantee of where you'll rank.
Why do search volume numbers differ between free keyword research tools?
Different tools round, bucket, and average the underlying Google Ads data differently, and some blend in additional estimates on top. The absolute number will rarely match exactly from one tool to the next — use it to compare keywords against each other inside the same tool, not as a precise monthly traffic count.
What does search intent mean in keyword research?
It's what someone typing that keyword actually wants: informational (learning something), commercial (comparing options), transactional (ready to buy), or navigational (looking for a specific site). Matching your page format to that intent matters more than the keyword's volume — a guide will not outrank a pricing page for a term people type right before they buy.