Best Grammar Checker
The 10 best grammar checker tools in 2026, ranked by accuracy, integrations, and value.
How This List Was Built
We compared grammar checkers on correction accuracy, style feedback, integration coverage, and price — ranked for professionals whose writing is judged.
What Drives the Ranking
Correction accuracy
False corrections damage credibility more than errors; accuracy is the core metric.
Integration coverage
Browser, Office, and Google Docs support decides where it helps.
Style feedback
Beyond grammar, style suggestions improve actual writing.
Why #Premium Took the Top Spot
Grammarly Premium wins because its real-time accuracy across browser, Office, and Docs at ~$12-30/mo covers the widest range of writing contexts — the default professional choice. ProWritingAid at ~$79/yr is the long-form author's pick with deeper style reports at lower cost; Linguix at ~$59 is the budget option. The honest answer: Grammarly for breadth, ProWritingAid for book-length depth, free tiers for casual needs.
When the ranking flips: ProWritingAid overtakes Grammarly for book authors who need structural reports Grammarly does not provide.
When the Ranking Changes
- Professional everywhere — pick Grammarly Premium Broadest integration coverage.
- Book-length writing — pick ProWritingAid Premium Deep style reports at ~$79/yr.
- Budget — pick Linguix Premium Solid checking at ~$59/yr.
What We Left Out
- Free-only tiers were excluded from this paid ranking.
- Tools without real-time integration were ranked down.
How This Was Researched
This ranking is based on a structured review of official product documentation, published specifications, current pricing, and feature analysis — the same methodology ToolStep describes on the /how-we-test/ page. We do not claim hands-on testing that did not happen.
Based on official product documentation as of June 2026.
Top 10 Picks
Premium
Best overall with AI rewriting, plagiarism detection, and integrations everywhere.
- Works in every app
- AI sentence rewriting
- Plagiarism scanner
- Expensive yearly
- Aggressive upsells
Premium
Best value with style reports, consistency checks, and lifetime pricing.
- Lifetime pricing option
- 20+ style reports
- Scrivener integration
- Interface cluttered
- Browser extension slower
Premium
Open-source multilingual checker with self-hosting option and no word limit.
- Multilingual support
- Open-source self-hosting
- No word limits on premium
- Fewer style suggestions
- No plagiarism check
Editor
One-time price for readability scoring and bold, clear writing style.
- One-time $20 price
- Readability grade scoring
- Highlights complex sentences
- No grammar fixes
- Desktop only, no browser
Business
Best for teams with style guide enforcement and brand voice consistency.
- Team style guide enforcement
- Brand voice consistency
- API for integration
- Expensive for individuals
- Setup is complex
Premium
AI sentence rephraser with translation and a built-in reader.
- AI sentence rephraser
- Translation built in
- Text-to-speech reader
- Interface dated
- Less accurate than Grammarly
Premium
Style and eloquence scorer with multilingual paraphrasing.
- Eloquence scoring
- Multilingual paraphrasing
- Plagiarism checker
- Smaller user base
- Fewer integrations
Premium
All-in-one grammar, style, and translator for a lower yearly price.
- Lower yearly price
- Built-in translator
- Browser and desktop apps
- Interface dated
- Less accurate than rivals
Business
Best for customer support teams with response suggestions and snippets.
- Response suggestions for support
- Snippets library
- Affordable per seat
- Narrow use case
- Not for creative writing
Premier
Translation-first tool with grammar checking for non-native English writers.
- Translation focused
- Good for non-native writers
- Affordable
- Grammar is secondary
- Limited style suggestions
Comparison Table
| # | Name | Brand | Price | Rating | Best For |
|---|---|---|---|---|---|
| 1 | Premium | Grammarly | $144 | 4.7/5
★★★★★ | Best overall with AI rewriting, plagiarism detection, and integrations everywhere. |
| 2 | Premium | ProWritingAid | $79 | 4.6/5
★★★★★ | Best value with style reports, consistency checks, and lifetime pricing. |
| 3 | Premium | LanguageTool | $59 | 4.5/5
★★★★★ | Open-source multilingual checker with self-hosting option and no word limit. |
| 4 | Editor | Hemingway | $20 | 4.4/5
★★★★☆ | One-time price for readability scoring and bold, clear writing style. |
| 5 | Business | Writer | $200 | 4.3/5
★★★★☆ | Best for teams with style guide enforcement and brand voice consistency. |
| 6 | Premium | Ginger | $90 | 4.2/5
★★★★☆ | AI sentence rephraser with translation and a built-in reader. |
| 7 | Premium | Outwrite | $95 | 4.1/5
★★★★☆ | Style and eloquence scorer with multilingual paraphrasing. |
| 8 | Premium | WhiteSmoke | $80 | 4/5
★★★★☆ | All-in-one grammar, style, and translator for a lower yearly price. |
| 9 | Business | Sapling | $25 | 4/5
★★★★☆ | Best for customer support teams with response suggestions and snippets. |
| 10 | Premier | Reverso | $30 | 3.9/5
★★★★☆ | Translation-first tool with grammar checking for non-native English writers. |
Pros & Cons Summary
Premium
Premium
Premium
Editor
Business
Premium
Premium
Premium
Business
Premier
FAQ
What is the best grammar checker?
Grammarly Premium at $144/year is the best overall with AI rewriting, plagiarism detection, and integrations in every app. For value, ProWritingAid at $79 offers lifetime pricing and 20+ style reports.
Is Grammarly worth the price?
Yes for professionals and students. Grammarly catches more than free tools and works in Word, Google Docs, and browsers. If price is an issue, Hemingway at a one-time $20 is a great budget alternative.
Free or paid grammar checker?
Free tools like Grammarly Free and LanguageTool Free catch basic errors. Paid versions add style suggestions, plagiarism detection, and AI rewriting. For published work, paid is worth it.
Best grammar checker for teams?
Writer.com at $200/year is best for teams with style guide enforcement and brand voice consistency. Sapling at $25 is best for customer support teams with response suggestions.
Do grammar checkers work offline?
Most are cloud-based. Hemingway Editor is the best offline option with a one-time desktop price. LanguageTool offers self-hosting for privacy-focused users who want offline grammar checking.
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