What is AIGrammarChecker?
AIGrammarChecker is an AI-powered, free English grammar checker that allows users to directly paste text or upload files (e.g., .txt, .docx formats). It provides real-time, highlighted annotations of error types and corrective suggestions. All input content remains private, ensuring user privacy and data security. The system also supports selecting English as the explanation language and offers detailed breakdowns for common issues like subject-verb agreement, word collocations, possessive misuse, and contraction usage, making it suitable for various English writing contexts, including student assignments, professional emails, and academic drafts.
Key features
It supports precise identification and correction of specific grammatical rules, such as subject-verb agreement, possessive pronouns (e.g., distinguishing between 'there' and 'their'), and contractions (e.g., differentiating between 'its' and 'it's').
It offers multi-format input options—paste text or upload files—and one-click export functionality (copy or download the corrected text), all without requiring registration and completely free of charge.
Use cases and audience
Users who need to enhance the accuracy and clarity of their English writing, including students, professionals, and English learners.
- Used to check for grammatical, spelling, and punctuation errors in English writing, enhancing text accuracy and clarity.
- Assist in learning English grammar rules by providing detailed correction explanations (such as subject-verb agreement, possessives, and contractions) to help understand the reasons behind errors.
- Optimize English sentence structure and expression to make the language more natural and expressive.
English text (direct paste) or English document files (upload).
The corrected English text, accompanied by explanations of error types (such as subject-verb agreement, part-of-speech selection, or contraction misuse), along with reasons for the corrections and optimization suggestions.
Frequently asked questions
What types of text does this grammar-checking tool support?
Supports directly pasted text as well as uploaded documents, capable of detecting errors ranging from basic grammar to complex sentence structures, including common spelling mistakes, verb tenses, subject-verb agreement, and more.
Will uploaded content be saved?
All pasted or uploaded text is not stored and is immediately deleted upon completion of the check, ensuring content security.
How to use
- 01
Paste English text or upload a document file.
- 02
Click the “Check Grammar” button to start the check.
- 03
View highlighted issues along with context-adapted suggestions for corrections.
- 04
Choose “Accept All” to apply all corrections, or use “Copy” or “Download” to export the optimized text.
Pricing and availability
Completely free to use, with all features fully unrestricted—no subscriptions, no fees required.
- Pricing source
- https://aigrammarchecker.io/
- Pricing last updated
- 2026-10-27
Prices and limits may change. Check the official website for current terms.
Official website & sources
Updated on 2026-10-27
