How to Choose Keywords for SEO: A Simple Step by Step Plan

Choose keywords by starting with what your buyers actually type, checking what the results page shows for that search, and picking terms where you can give a better answer. Use free tools first: Search Console, Google Trends and Keyword Planner. Then map one main keyword to one page.

What Happened?

A user on r/SEO asked how others choose keywords for SEO. The thread was about 25 days old, with 90 votes and 136 comments. We could read only the title and a snippet. The snippet describes a process that starts by pulling keywords from Google Keyword Planner for the page, then sorting through thousands of terms. We did not read the comments, so we do not report the other answers.

This is one of the most common questions in SEO, and the honest answer has several parts. There is no single best tool or formula. This guide gives a process you can run on any site.

Why People Are Talking About It

Keyword research looks easy but has many traps. Tools show big lists, scores and volumes. Beginners often choose the term with the most searches and then fail to rank. Others pick very low-volume terms and get no traffic.

Another reason: the tools disagree. Search volume is an estimate. Difficulty scores are made by each vendor with their own formula. Two tools can give different numbers for the same keyword.

Also, AI answers and richer results pages change which searches send clicks. That makes the results page itself more important than a number in a tool.

What Users Experienced

We could not open the thread, so we cannot report comments. These are common problems that tool vendors and guides describe. Treat them as reports and expert opinion.

• Keyword Planner is free but built for advertisers. Ahrefs notes that it shows volume as broad ranges, not exact numbers, and that its "competition" metric is about ads, not organic search.
• Semrush also notes that Keyword Planner does not give an organic difficulty metric.
• Lists get huge fast. Without a filter for intent and fit, people lose time on keywords that will never convert.

Why It Happens

Google's own SEO starter guide gives the basic idea. It tells you to think about the words a user might search to find your content. It adds that users who know a lot about a topic may use different keywords than someone new to it. That is a verified fact from Google.

The same guide says that creating content people find compelling and useful will likely influence your presence in search results more than any other suggestion in the guide. So keywords help you pick topics and words. They do not replace quality.

Tools are built on estimates. Ahrefs says Keyword Planner's search volume is shown in ranges and that competition there is not organic competition. So a tool score is a clue, not a rule. The results page is the real test.

Working Fixes

This process is our method. It uses Google's guidance and the tool limits above.

1. Write your seed list by hand. List the problems, products and questions your buyers talk about. Use their words, not your internal terms. Include beginner and expert phrasing, as Google suggests.
2. Mine what you already have. If the site has data, open Search Console and review queries that already bring impressions. Look for queries at positions 8 to 30. These are often the easiest wins. This is our advice.
3. Expand with free tools. Use Google Keyword Planner in a Google Ads account to find related terms and rough volume. Use Google Trends to compare terms and see seasonality.
4. Read the results page. Search each candidate. Note what types of pages rank: guides, product pages, forums, videos. Note the intent behind the search: learn, compare, buy or find a place.
5. Match intent. Only target a keyword if your page type fits the results page. If the top results are product pages and you plan a blog post, choose another term.
6. Judge difficulty from the page, not only the score. Look at who ranks. If the top results are large brands with deep guides, a new site will struggle. If you see thin pages or forums, there may be room. This is expert opinion.
7. Add a third-party difficulty check if you can. Tools like Ahrefs or Semrush offer difficulty scores. Use them as a rough guide only.
8. Map one main keyword to one page. Give each page a clear main topic and a few close variations. If two pages would answer the same search, merge them or change the angle.
9. Prioritize by value. Score each keyword on business fit, intent and ability to win. Do not sort by volume alone.
10. Write the page to answer the question. Use the keyword naturally in the title, headings and body. Avoid stuffing.
11. Review after 3 to 6 months. Check which pages gained queries and impressions, then adjust.

What Doesn't Work

• Picking by volume alone. High volume often comes with strong competition and mixed intent.
• Trusting the "competition" column in Keyword Planner. Ahrefs says it measures advertiser competition, not organic.
• Chasing every variant with its own page. Several pages that answer the same search split your effort. Google's spam guidance also warns against making many pages with no added value, so avoid thin variant pages.
• Copying a competitor's list. It shows what they target, not what suits your site or goals.
• Ignoring intent. A perfect keyword with the wrong page type will not rank.
• Expecting exact numbers. Tools estimate. Use them for direction.

Official Response

Google does not offer a keyword tool for organic search in the way vendors do. Its guidance is simple. In the SEO starter guide, it asks you to think about how users search and to create helpful, reliable, people-first content.

Google does provide Search Console, which shows the queries that already bring people to your site, and Google Trends. Keyword Planner is part of Google Ads. Google positions it for ad planning, which is why its competition metric reflects ads.

We did not find an official Google rule on keyword density or on a perfect number of keywords per page. Be careful with anyone who gives exact targets.

Key Takeaways

• Start with real buyer language, not tool lists.
• Use Search Console, Google Trends and Keyword Planner as free starting tools.
• Keyword Planner shows ranges, and its competition metric is for ads.
• Read the results page to judge intent and difficulty.
• Map one main keyword to one page and avoid thin variant pages.
• Prioritize by business fit and your chance to win, not volume alone.
• Review results after a few months and adjust.

Related Reading

• How to choose AI tools without a bloated stack
• Next.js static SEO
• Google Search for publishers

FAQ

What is the best free tool for keyword research?

There is no single best tool. Search Console, Google Trends and Keyword Planner are good free starts. Each shows different data, so use them together.

Is Keyword Planner good for SEO?

It helps with ideas and rough volume, but it was built for ads. Ahrefs says it shows ranges and that its competition metric is not organic competition.

How many keywords should I target per page?

Pick one main keyword and a few close variations that share the same intent. We found no official Google rule for an exact number.

What is search intent?

It is the reason behind a search: learn, compare, buy or find. Look at what ranks to see which intent Google shows for a keyword.

How do I judge keyword difficulty?

Check who ranks and how deep their pages are. Use a tool score as a rough guide. If top results are strong brands with deep guides, expect a hard fight.

Should I target high-volume keywords first?

Not always. High volume often means high competition and mixed intent. Start with terms that fit your business and where you can give a better answer.

How long until keywords pay off?

It varies. Many new pages take months to rank. Ahrefs found that only 5.7% of new pages reached the top 10 within a year.