You don’t need a $400/month Ahrefs subscription to find keywords for your practice. The free tier of Ahrefs Webmaster Tools, combined with Google Search Console and Google Keyword Planner, covers most healthcare practices’ research needs at zero cost. The tools below form a complete research stack — organized by what each one is actually good for.
The 10 Free Keyword Research Tools Worth Using
1
Google Search Console
Essential
Keywords you already rank for (positions 5-30) that need content updates
2
Google Keyword Planner
Essential
Volume estimates and geographic demand signals for healthcare terms
3
Ahrefs Webmaster Tools
Essential
Site-level keyword data and quick-win identification with technical audit
4
Ahrefs Keyword Generator
Build keyword lists from seed terms (100 free results)
5
Answer the Public
Question-based and long-tail keyword discovery
6
Google Trends
Seasonal patterns and emerging search demand
7
Ahrefs SERP Checker
Evaluate ranking difficulty before targeting a keyword
8
Ahrefs KD Checker
Fast difficulty triage
9
ChatGPT
Seed keyword brainstorming
10
Moz Keyword Explorer
Semantic keyword clustering
The 4 Metrics That Matter
Monthly Search Volume
Prioritize 100-2,000/month healthcare-specific terms over high-volume generic terms where you will compete with WebMD and lose.
Keyword Difficulty (KD)
Most local healthcare practices should target KD 0-40 for realistic ranking gains within 6-12 months.
Search Intent
Match content type to intent — informational queries need educational content; transactional queries need service pages with clear CTAs.
Traffic Potential
More accurate than raw volume — estimates total traffic a top-ranking page would get from all related keywords, not just the one you targeted.
For a complete walkthrough of the full research process, see the keyword research process guide or explore Direction’s healthcare SEO services.