Several free tools can check grammar without a paid plan, but each limits text length, daily use or features. This page lists the free options whose limits we could confirm on the vendor's own website, then explains when a checker isn't enough. Tools we could not verify are left out, not ranked lower.
Free options and their limits at a glance
| Tool | Free option and limits | What it is |
|---|---|---|
| Grammarly Free | Spelling and grammar checks, tone detection, 100 AI prompts per month | Writing assistant |
| LanguageTool Basic | 2,000 characters per text field; 3 AI sentence rephrasings per day | Writing checker |
| Scribens | 8,000 characters per day | Online grammar and spelling checker |
| ProWritingAid | Free plan; suggestions for 500 words at a time, plus daily caps on some features | Writing checker and editing reports |
| Google Docs | Suggestions appear in documents when turned on | Document editor with built-in spelling and grammar suggestions |
| PromGee | Free web grammar checker, sentence corrector and quizzes | English learning platform |
What are the free alternatives to Grammarly?
The simplest free option may be Grammarly's own free plan, which includes spelling and grammar checks, tone detection and 100 AI prompts per month. LanguageTool Basic is free with a 2,000-character limit per text field. Scribens states that it is free and allows 8,000 characters per day. Google Docs underlines spelling mistakes in red and grammar suggestions in blue when suggestions are turned on.
PromGee's free English grammar checker, sentence corrector, casual-to-formal converter and slang-to-formal converter also work in the browser. They explain each change, and the text you enter is sent to an AI provider for processing, so avoid pasting confidential text.
Do you need a checker or grammar practice?
A checker fixes the text in front of you. Practice changes what you write next time. If you are a fluent writer who wants a safety net, a checker such as Grammarly, ProWritingAid or LanguageTool is the right category. If you are learning English and keep repeating the same mistakes with articles, tenses or prepositions, practice with explanations may help more. Many learners use one of each.
Which tools were left out, and why?
We only list a free plan's limits when the vendor's official page confirmed them on the date checked. We did not include tools whose official pages did not state their limits clearly, or could not be loaded when we checked. If you have an official source, you can contact us.
Who should choose which?
- Grammarly Free, LanguageTool Basic or Scribens: occasional writers who need basic checks at no cost and can work within the limits.
- ProWritingAid Free: writers who mostly check short passages and want to start on a free plan.
- Google Docs: people who already write in Docs and need simple spelling and grammar suggestions.
- PromGee's free tools and quizzes: learners who want each change explained and practice on the mistakes they repeat.
For head-to-head details, read PromGee vs Grammarly.
Sources & last checked
Competitor details were checked on against the official pages below. Prices and plans change; check the official page before you buy. If something here is out of date, please tell us through the contact page.
- Grammarly — Plans — Free plan features and AI prompt allowance (checked October 8, 2026)
- ProWritingAid — Pricing — Free plan limits (checked October 8, 2026)
- LanguageTool — Premium — Free Basic plan limits (checked October 8, 2026)
- Scribens — Home and FAQ — free use, daily character limit, ad and Premium funding (checked October 8, 2026)
- Google Docs Editors Help — Check your spelling & grammar in Google Docs (checked October 8, 2026)
- Google Workspace — Google Docs — “Anyone with a Google Account can create in Docs” (checked October 8, 2026)
- PromGee — Free tools (checked October 8, 2026)
Grammarly is a trademark of Grammarly, Inc. ProWritingAid, LanguageTool, Scribens and Google Docs are trademarks of their respective owners. PromGee is not affiliated with, endorsed by, or sponsored by any of them. Names are used only to identify the products listed.