Google Keyword Planner

Google Keyword Planner (GKP) is a free tool inside Google Ads. It was designed for advertisers, but because its numbers come straight from Google it is the foundational first stop for SEO keyword research too — the original source of truth for search volume and advertising competition.

Core capabilities

• Discover new keywords — enter seed terms, a website URL, or product categories to generate relevant keyword ideas.
• Search volume and forecasts — for a keyword list, get historical and forecast metrics:
  • Average monthly searches — often a range (e.g., 1K-10K) for accounts without active ad spend.
  • Competition — a qualitative Low/Medium/High signal of advertiser demand.
  • Top-of-page bid (low/high) — a CPC estimate that hints at commercial intent.

Where it fits. GKP works best at the very start of research: brainstorming a core keyword list for content, planning and forecasting PPC campaigns (its original purpose), reading commercial intent off bid data, finding long-tail and question ideas, and spotting seasonality in the historical volume trend.

Pricing. Free, but access to data depends on spend. Any Google Ads account gets the core features with volume shown in broad ranges; accounts with active ad spend unlock precise monthly search figures and more detailed forecasts. There is no paid GKP tier — the difference is whether the account is actively advertising.

Practical notes. Even with premium tools, don’t skip it. The usual workflow: brainstorm seed keywords in GKP, export and expand them in Ahrefs or Semrush for difficulty and SERP data, then qualify intent with a tool like AnswerThePublic. Without active ad spend, read the relative differences between ranges rather than absolute numbers — a term in “10K-100K” is clearly more popular than one in “1K-10K,” and that’s often enough to guide early strategy.

Direct link: https://ads.google.com/home/tools/keyword-planner/ (requires a Google Ads account)