Keyword Research Tools: Free and Paid Options Compared
Compare keyword research tools by free access, search data, paid options, and best use. Search-volume estimates and keyword databases differ by provider.
Last verified: September 7, 2026.
| Tool | Free | Data | Paid From | Best For | Source |
|---|---|---|---|---|---|
| Ahrefs Keywords Explorer | Limited | Keywords + difficulty | Paid plans | Deep SEO research | ↗ |
| AlsoAsked | Limited | People Also Ask data | Paid plans | Question discovery | ↗ |
| AnswerThePublic | Limited | Questions + topics | Paid plans | Content ideation | ↗ |
| Google Keyword Planner | Free | Google Ads keyword data | Free | Google search demand | ↗ |
| Google Trends | Free | Relative search interest | Free | Trend validation | ↗ |
| Keyword Insights | Trial / credits | Clustering + intent | Paid plans | Content clustering | ↗ |
| Keyword Tool | Free limited | Autocomplete keywords | Paid plans | Long-tail ideas | ↗ |
| Keywords Everywhere | Limited | Browser keyword metrics | Credit-based | Quick SERP research | ↗ |
| KWFinder | Trial | Keywords + difficulty | Paid plans | Beginner keyword research | ↗ |
| LowFruits | Trial / credits | Low-competition keywords | Credit/subscription | Long-tail SEO | ↗ |
| Moz Keyword Explorer | Limited | Keyword difficulty + SERPs | Moz plans | SEO research | ↗ |
| SE Ranking Keyword Tool | Trial | Keyword suggestions + metrics | Paid plans | SEO teams | ↗ |
| Semrush Keyword Magic Tool | Limited | Large keyword database | Paid plans | SEO campaigns | ↗ |
| Serpstat Keyword Research | Limited | Keywords + competitors | Paid plans | SEO/PPC research | ↗ |
| Ubersuggest | Limited | Keywords + SEO metrics | Paid plans | Budget research | ↗ |
| WordStream Free Keyword Tool | Free | Keyword ideas | Free | Quick keyword discovery | ↗ |
Terms, pricing, eligibility and availability can change. Check the ↗ source for current details.
