How to Use the Keyword Magic Tool: From Seed Keyword to Target List

The Keyword Magic Tool takes a seed keyword and returns a large list of related ideas, each with search volume, Keyword Difficulty (KD%), intent, CPC, and competitive density. The workflow: enter your seed, scan the columns, filter by intent, volume, and difficulty, then save the keepers to a keyword list.

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The Keyword Magic Tool is the most-used feature in Semrush: it answers every content creator’s first question — “what should I write about that people actually search for?” One seed keyword in, hundreds of related ideas out, each with data attached. But beginners misuse it: they sort by volume, pick the biggest numbers, and wonder months later why nothing ranks. This guide teaches the decision process — reading the data, filtering like an editor, and leaving with a short list worth your time.

As always: Semrush updates its interface — if a label moved, search Semrush’s help center for the current name.

Key takeaways

Seed in, ideas out. One seed keyword produces a large list of related ideas grouped by match type (Broad, Phrase, Exact, Related) — raw material, not a plan.
Read four columns first: search volume, Keyword Difficulty (KD%), search intent, and CPC/competitive density — demand, competition, purpose, and commercial value.
Intent filters fastest. A keyword with the wrong intent is unusable no matter how attractive its volume — filter intent first, numbers second.
Difficulty is relative to your site. New sites should weight low-KD%, specific long-tail ideas; established sites can compete for harder terms.
Save as you go. Promising keywords go into keyword lists (and topic clusters) during the session — research you close without saving, you redo.

What the tool is (and what it isn’t)

The Keyword Magic Tool is a keyword discovery engine: your seed in — say “indoor plants” — and a structured pile of ideas out (“best indoor plants for low light,” “safe for cats,” “plant delivery”), each with estimated metrics, organized into match-type groups you can filter, sort, and save.

What it isn’t: a strategy. The tool happily shows enormous-volume keywords you’d never rank for, or commercial terms when you wanted informational topics. It doesn’t know your authority, business model, or what you can credibly cover. The judgment — which ideas become targets — is the human part.

It also isn’t exact numbers. Search volumes are estimates — excellent for comparing ideas against each other, not gospel about precise monthly searches. Read every number as “this versus that,” never as “exactly this many people.”

Step 1: Choose and enter your seed keyword

Everything downstream depends on the seed, so choose well.

A good seed is a topic, not a keyword target. You’re entering the neighborhood to explore, not the exact phrase you want to rank for. “Indoor plants” is a seed; “best indoor plants for low light apartments” is already a specific idea — and a poor seed, because it narrows results too early.

Match the seed to your content plans. If your next quarter is about houseplant care, seed “indoor plants” or “houseplants.” The seed should be the broad topic you’ll actually publish about.

One seed per session. Three seeds at once drown you in merged results. Run one, work its list, save keepers, then run the next.

Enter the seed, set your target location if asked (data varies by geography — match your audience), and run it. Before scrolling the big list, learn to read it.

Step 2: Read the columns like an editor

Each keyword idea arrives with a row of metrics. Here’s what each one means and how to actually use it.

Search Volume — estimated average monthly searches. Use comparatively: 5,000 vs. 500 shows relative demand. Not a traffic promise — ranking for a 5,000-volume keyword doesn’t deliver 5,000 visitors (position, intent, and SERP features take their cut). High volume with wrong intent is worthless; low volume with perfect intent can be gold.

Keyword Difficulty (KD%) — Semrush’s estimate of ranking difficulty, as a percentage. The column beginners ignore and veterans sort by. A new site should treat high-KD% terms as long-term aspirations, not next-month targets. Your site’s authority sets your difficulty budget — spend it where it counts.

Intent — what the searcher wants: learn (informational), compare (commercial), buy (transactional), find a site (navigational). The most strategic column: intent must match the page you’ll build. Mismatched intent is the #1 reason researched keywords never convert.

CPC — what advertisers pay per click. High CPC signals commercial value even if you never run ads — someone pays real money for these visitors. Strong signal for affiliate or product-adjacent content; less relevant for pure informational strategies.

Competitive Density — how contested the paid auction is. High density means advertisers fight over the term: useful context for commercial topics, background noise for informational ones.

Read a row as a sentence: “This many people search, it’s this hard to rank, they want this kind of result, the traffic is worth this much to advertisers.”

Step 3: Understand the match-type groups

The tool organizes ideas into match-type groups — typically Broad, Phrase, Exact, and Related. Know the difference and you stop reading the same idea four times.

Broad Match — widest net: ideas related to your seed in any order, with variations. Biggest list, most noise. Good for exploring a topic’s full shape.
Phrase Match — contains your seed phrase within longer queries. Usually the sweet spot: focused enough to be relevant, broad enough to surprise.
Exact Match — tightest: close variations of the seed itself. Smallest list, most directly relevant. Good for sanity-checking core terms.
Related — semantically connected ideas that don’t contain the seed words. The “you didn’t think of this” group, often hiding the best angles.

Practical approach: start in Phrase Match, dip into Broad for exploration, check Related for angles, glance at Exact for core terms. Most sessions live in Phrase Match — best signal-to-noise ratio.

Step 4: Filter ruthlessly

A thousand ideas is not a plan — it’s a to-do list for your filters. Filter in this order:

1. Intent first. Decide what you’re planning. Informational guides? Filter to informational; commercial terms fall away. This one filter typically removes half the list — all unusable anyway.

2. Keyword Difficulty. Set a ceiling matching your site. New site, little authority? Keep KD% low — target terms rankable in months, not years. Established site? Afford a higher ceiling. No universal “good” KD% exists — only KD% relative to your site.

3. Volume floor, not target. Set a minimum to clear near-zero terms, but don’t chase the maximum. Some of the best keywords for a new site are modest-volume, low-difficulty, perfect-intent terms bigger sites ignore.

4. Word count as a specificity dial. Longer queries are more specific. Filtering to longer phrases surfaces long-tail ideas: lower volume individually, easier to rank for, often higher-converting.

5. Question filters for angles. Filter to questions (“how,” “what,” “why”) — each is a reader telling you what confuses them.

Then sort survivors by KD% ascending and read the top: specific, rankable, intent-matched candidates.

Step 5: Save keepers to lists and clusters

Here’s where beginners lose work: they research for an hour, close the tab, and next week can’t remember which keywords were good. Save during the session, not after.

Save keepers to named keyword lists (labels change; the concept doesn’t). Name the list after the project — “Q1 houseplant content” beats “List 1” in March.

Beyond flat lists, the tool groups keywords into topic clusters — related keywords coverable by one page or linked pages. Clustering bridges research and content architecture: 40 scattered keywords become 8 clusters, each roughly one article. Our Keyword Strategy Builder guide takes clustering into full content planning.

Decision criteria: which keywords are worth targeting

Filters narrow; judgment picks. Five questions per survivor:

Intent match? Informational keyword → can I write the definitive guide? Commercial → an honest comparison? If no, it isn’t for you regardless of numbers.
Rankable in a reasonable timeframe? Be honest about your authority. Target below your weight, build, then reach higher.
Volume worth a page? Not “big” — “enough.” A 200-volume keyword converting readers beats a 10,000-volume bouncer.
Can I beat what’s ranking? Thin, outdated, or generic top pages you can genuinely top = opportunity. Excellent, authoritative pages = different fight.
Fits my content plan? A perfect-in-isolation keyword unrelated to everything else creates an orphan page. Topical-neighborhood keywords compound; strays don’t.

Pass all five: target. The rest are “later” or “never.” For the competitive picture around a survivor, run a Keyword Gap check to see which related terms rivals already own.

A worked mini-session

A concrete example: you’re a blogger in the houseplant niche, site about a year old, modest authority.

Seed: “indoor plants,” location set to your audience’s country. Run.

First look: thousands of ideas. Start in Phrase Match — a few hundred containing your seed concept.

Filter 1 — intent: planning informational guides, so filter to informational. The list roughly halves.

Filter 2 — difficulty: young site, so cap KD% low. Another big cut.

Filter 3 — volume floor: modest minimum to clear near-zero terms.

Filter 4 — questions: toggle the question view — light requirements, pet safety, watering mistakes, each a potential article angle.

Save: 15 keepers into “houseplant guides Q1.” Notice natural clusters: low-light, pet-safety, watering-mistakes. Three clusters, three article briefs, one focused session.

Under an hour. Output: a quarter’s worth of vetted content ideas. That’s the workflow.

For any single keyword on that list, the next step is reading its full report card — exactly what our Keyword Overview guide teaches.

Frequently asked questions

What is a seed keyword?
A seed keyword is the broad starting term you enter into the Keyword Magic Tool — the topic neighborhood to explore, like “indoor plants.” It’s deliberately broad: the tool expands outward into hundreds of specific ideas. Don’t enter the exact phrase you want to rank for; that narrows results before exploration begins. One seed per session keeps results focused and lists clean.

What is a good Keyword Difficulty score to target?
There is no universal good score — difficulty is relative to your site’s authority. A new site should focus on low-KD% terms rankable within months; an established site can compete for harder terms. The practical method: filter to a KD% ceiling you’re comfortable with, pick targets from what survives, and raise the ceiling as your site earns authority. When in doubt, target below your weight.

How many keywords should be on my target list?
Fewer than you think. A focused list of 10–20 well-vetted keywords beats a spreadsheet of 500 unfiltered ideas. Each target should map to a page you will actually build — no planned page, no target; it’s inventory. Start small, publish, measure, then run the next session. Keyword research is a repeating habit, not a one-time mega-download. Grow the list as you publish, not before.

Should I target high-volume or low-volume keywords?
Target intent-matched, rankable keywords — volume is the third consideration, not the first. High volume with wrong intent or impossible difficulty is worthless. Low-volume, low-difficulty, perfect-intent keywords are often the best targets for newer sites: winnable, attracting exactly the right readers, compounding as you publish. Treat volume as a sanity check (is anyone searching?) rather than a desirability ranking.

What’s the difference between the Keyword Magic Tool and Keyword Overview?
The Magic Tool is for discovery: one seed becomes hundreds of ideas to explore, filter, and save. Keyword Overview is for depth: one keyword’s full report card — volume trends, difficulty, intent, CPC, competitive density, SERP features. The natural workflow is Magic Tool first (find candidates), then Keyword Overview on your shortlist (vet deeply). Our Keyword Overview guide covers the second half.

Your concrete next step

Open the Keyword Magic Tool and run one seed keyword from your actual content plans. Apply the five filters in order, save 10–15 keepers to a named list, and note the clusters. Then take your three most promising keepers into our Keyword Overview guide and read each full report before committing to writing.

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