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Grammar Checker

Check grammar errors and optimize vocabulary with CudekAI free grammar checker. Upload files, paste text, or scan URLs to improve writing clarity instantly in multiple languages.
0 / 1,000 chars0 words

Writing Goals

Tone
Audience
Intent
Domain
Encrypted
No Storage
4.9/5 Rating
Loved by 190k+ users

Check and Correct Grammar Mistakes

Grammar check tool detects grammar errors, sentence-structure problems, and incorrect word usage that affect writing accuracy. CudekAI instantly evaluates grammatical and punctuation rules to identify spelling mistakes, capitalization errors, and other language inconsistencies. It highlights punctuation and syntax mistakes and applies automatic one click correction for clearer communication.

Improve Clarity and Quality

Grammar check tool improves sentence clarity and fluency by refining word choice, strengthening logical flow, and reducing ambiguity in written content. CudekAI analyzes semantic coherence and paragraph structure to improve paragraph flow, unity, and overall readability. Grammar Checker provides rewrite recommendations that improve precision and conciseness while preserving the original meaning.

Optimize Your Vocabulary

Optimize vocabulary with Grammar check by detecting repetitive or overused words and suggesting precise synonyms. CudekAI analyzes language context using integrated dictionary and thesaurus references to provide accurate word replacement. It improves lexical precision and vocabulary balance for natural, effective expression.

Features

Simplify writing with Grammar Checker's advanced Features

Check Grammar in Multiple Languages

Check grammar across multiple languages using language-specific and localised rules. Switch between English, German, French, Spanish, Italian, Dutch, and Nordic languages with built-in language selection.

Analyze writing in depth

Analyze readability, clarity, style, tone, and coherence for both short- and long-form text. Get AI-powered insights, including flow scoring, consistency checks, and multilingual evaluation.

Adjust Tone Instantly

Select multiple tones to match academic, formal, informal, or neutral writing styles. Enhance expression with AI-powered tone detection and style checking for consistency and appropriateness.

Edit in Real Time

Edit content in real time with live suggestions and corrections across all devices. Track progress and refine structure using responsive editors and visual guidance indicators.

How it works

Learn how to use the CudekAI Grammar Checker tool

Instantly detect and correct grammar errors with CudekAI.

01

Enter Input

Copy and paste text, upload files, or provide a URL. Supported formats include PDF, DOCX, TXT, RTF, and images.

02

Fix Grammar

Correct grammar by reviewing detected mistakes and applying suggested corrections in the CudekAI grammar checker. Accept or reject edits to refine your text with precision and clarity.

03

Export Results

Download reports or copy-edited text, or share previewed results via email or a link. Track changes, compare revisions, and export documents in your preferred format.

Use Cases

Why is CudekAI the Best Grammar Checking tool?

Experience an accurate grammar check and smart writing correction for academic, business, and marketing content.

Academia & Research

Grammar check academic content to refine research papers, theses, and dissertations with precise grammar and professional proofreading. CudekAI simplifies scholarly writing, enhances academic tone, and ensures submission readiness for abstract, literature review, methodology sections, and research proposals.

Corporate & Business Professionals

Grammar check business content for emails, reports, proposals, and professional documents with precise corrections. CudekAI ensures clarity, appropriate tone, and compliance while refining resumes, cover letters, and formal letters for polished, professional, and human-like outputs.

Marketers & Content Creators

Grammar Checker optimizes SEO writing, web copy, and articles with accurate grammar, readability improvements, and structured content. CudekAI balances keywords, ensures semantic and topical relevance, and improves headings, paragraphs, and sentences for professional, engaging, and audience-ready outputs.

Pricing

Start Free, Upgrade Anytime

Enterprise Plan

Best for agencies, teams & power users

Custom Pricing

Credits: Tailored for You

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API

Access grammar check through secure API endpoints. CudekAI allows teams to integrate third-party tools and workflows, automatically processing content for efficient, scalable editing.

Languages

Supported Languages

The CudekAI Grammar Checker supports grammar checks in over 103 languages including English, German, French, Spanish, Italian, Dutch, and many more.

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English

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Afrikaans

🇦🇱

Albanian

🇪🇹

Amharic

🇸🇦

Arabic

🇦🇲

Armenian

🇦🇿

Azerbaijani

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Basque

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Belarusian

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Bengali

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Bosnian

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Bulgarian

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Catalan

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Cebuano

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Chichewa

🇨🇳

Chinese Simplified

🇹🇼

Chinese Traditional

🇫🇷

Corsican

🇭🇷

Croatian

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Czech

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Danish

🇳🇱

Dutch

Esperanto

🇪🇪

Estonian

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Filipino

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Finnish

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French

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Frisian

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Galician

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Georgian

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German

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Greek

🇮🇳

Gujarati

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Haitian Creole

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Hausa

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Hawaiian

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Hebrew

🇮🇳

Hindi

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Hmong

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Hungarian

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Icelandic

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Igbo

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Indonesian

🇮🇪

Irish

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Italian

🇯🇵

Japanese

🇮🇩

Javanese

🇮🇳

Kannada

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Kazakh

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Khmer

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Korean

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Kurdish

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Kyrgyz

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Lao

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Latin

🇱🇻

Latvian

🇱🇹

Lithuanian

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Luxembourgish

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Macedonian

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Malagasy

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Malay

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Malayalam

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Maltese

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Maori

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Marathi

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Mongolian

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Myanmar

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Nepali

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Norwegian

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Pashto

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Persian

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Polish

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Portuguese

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Romanian

🇷🇺

Russian

🇼🇸

Samoan

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Scots Gaelic

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Serbian

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Sesotho

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Shona

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Sindhi

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Sinhala

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Slovak

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Slovenian

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Somali

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Spanish

🇮🇩

Sundanese

🇹🇿

Swahili

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Swedish

🇹🇯

Tajik

🇮🇳

Tamil

🇮🇳

Telugu

🇹🇭

Thai

🇹🇷

Turkish

🇺🇦

Ukrainian

🇵🇰

Urdu

🇺🇿

Uzbek

🇻🇳

Vietnamese

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Welsh

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Xhosa

🇮🇱

Yiddish

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Yoruba

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Zulu

Reviews

Professionals and everyday users rely on it

Catches what I always miss

I write fast and leave typos everywhere. Cudekai's grammar checker flags the awkward sentences and missing commas instantly, so my emails and reports finally look professional.

O

Olivia

A second pair of eyes

English isn't my first language, so I run everything important through the grammar checker first. It explains why something is wrong, not just what to fix, and that's actually helped me improve.

M

Marcus

Faster than proofreading myself

I used to read my essays three times and still miss errors. Now I run them through Cudekai once and trust the grammar is clean. It's a huge time saver before deadlines.

P

Priya

Clean suggestions, no clutter

What I like is that it doesn't over-correct or change my style. It just fixes the actual grammar problems and leaves my voice intact.

T

Tom

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Support

Frequently Asked Questions (FAQs)

What is Grammar Checker?

A grammar checker is a tool by CudekAI that detects and corrects errors in spelling, punctuation, and sentence structure to improve overall writing quality.

Why do you need a grammar checker?

Grammar check reviews writing for simple and complex errors, suggesting instant changes to ensure clear, professional, and grammatically error-free content.

How does CudekAI Grammar Checker work?

CudekAI analyzes text using AI-powered algorithms for grammar checks. It highlights errors and suggests corrections for punctuation, tone, style, and fluency.

Do we store any data?

No, we offer end-to-end encryption. All text is processed securely and deleted after analysis.

What languages does the CudekAI Grammar Checker offer?

The tool supports multilingual grammar checks in over 100 languages, including English, German, French, Spanish, Italian, Dutch, and many more.

How is the CudekAI Grammar Checker tool different from others?

CudekAI detects both basic and advanced errors while preserving meaning and tone. It combines multilingual grammar checking, tone adjustment, real-time editing, and AI-powered analysis for professional results across browsers, desktops, and mobile devices.

Can CudekAI Grammar Checker check punctuation?

Yes, CudekAI detects and corrects punctuation errors across sentences, paragraphs, and full documents. It identifies and fixes misplaced commas, semicolons, and quotation marks.

Can I check spellings in my assignments?

The tool identifies spelling mistakes and provides suggestions to improve and ensure every part of the content is accurate.

How does CudekAI Grammar Checker ensure academic integrity?

CudekAI Grammar Checker supports proper academic standards by correcting grammar and style without generating content that violates integrity rules.