Free AI Humanizer: Humanize AI Text

An AI humanizer is a tool that rewrites AI-generated text, like content from Grammarly, ChatGPT, Gemini, or Claude, to improve clarity, flow, and readability. It helps make any type of writing (human- or AI-generated) sound more natural and engaging, without changing what you meant to say.  

While an AI humanizer can be a helpful tool to make any writing sound more natural, keep in mind that the use of AI humanizers can be frowned upon in certain contexts. We suggest using Grammarly’s AI humanizer alongside Grammarly’s suite of transparency features in scenarios where it’s important to demonstrate the source of your text and how it was changed.

Grammarly’s AI humanizer uses advanced AI (Natural Language Processing) to analyze text and rewrite it in a human-like way without changing the original meaning.

The process typically works as follows:

1. Input your text: You paste your AI-generated text into the tool.
   
2. AI analysis: The humanizer scans the writing for AI-specific patterns (e.g., overly formal tone or repetitive phrasing).
   
3. Rewriting: It rephrases sentences and adjusts wording and tone to make your writing sound more natural and fluent.
   
4. Output: You receive an updated version of the text that reads as if a human wrote it, with the original meaning preserved.
   

It’s easy to use Grammarly’s free AI humanizer:

1. Paste your text or upload a document into the tool at the top of this page.
   
2. Click “Humanize”
   
3. Receive rephrased text in seconds that eliminates stiff, awkward phrasing and replaces it with clear, natural-sounding writing that preserves your meaning.
   

When you sign up for Grammarly, you get access to the Humanizer agent, which offers advanced humanizing features. You can choose from four distinct, engaging voices or upload samples to create your own unique voice, all without disrupting your writing flow.

Yes. The AI humanizer tool on this page is free to use and offers basic humanization for your text. When you sign up for a free Grammarly account, you also get access to the Humanizer agent, which lets you choose from four distinct, engaging voices, create a custom voice profile, and humanize writing in six languages. Upgrade to Grammarly Pro to unlock the full Humanizer experience along with Grammarly’s complete suite of advanced writing features.

AI-generated content often follows recognizable patterns. Grammarly’s AI humanizer refines text to make it sound more natural and engaging while preserving accuracy.

This tool is not intended to bypass AI detectors. Instead, it enhances clarity and coherence, helping AI-assisted writing feel more polished and readable. Grammarly encourages transparent and responsible AI use, including clearly acknowledging AI assistance in academic or professional work.

It depends on the context of your writing task. In many professional settings, using AI tools to draft or polish content is appropriate—and increasingly common. Tools like Grammarly’s AI humanizer can help refine AI-generated text so it’s clearer, more natural, and easier to read.

However, in academic settings or any context where AI use is restricted or must be disclosed, using an AI humanizer to disguise the use of AI may be considered unethical and could constitute cheating or plagiarism. Grammarly encourages transparency and integrity in all forms of communication, and we recommend citing AI when in doubt.

To help support responsible writing practices, Grammarly includes features that promote academic and professional integrity, such as:

• Citations – To properly attribute sources and disclose any AI assistance.
  
• Authorship support – To help you and your audience clearly see where your words originated.
  
• Plagiarism and AI detection – To check your content for potential plagiarism and AI-generated text, so you can feel confident you’re submitting original work.
  

AI humanizers are helpful for anyone who wants to rephrase AI-generated text into clear, compelling writing. They are useful for:

• Professionals: Polish AI-generated reports, emails, and business documents so they sound clear, confident, and professional.
  
• Marketers: Fine-tune AI-generated ad copy, social posts, and campaign materials to better resonate with your audience.
  
• Students: Refine AI-assisted writing for essays and assignments to improve clarity and flow. Just be sure to cite AI use responsibly and (if applicable) follow your school’s policies.
  
• Educators: Edit AI-generated lesson plans, rubrics, or summaries to ensure clarity, appropriate tone, and classroom readiness. Pair this with our Authorship features to show your students how you leveraged AI and increase classroom transparency.
  
• Customer support teams: Humanize AI-written responses to ensure they’re clear, helpful, and conversational.
  
• Writers and authors: Use AI to support your drafting process, then humanize the output to make it sound more natural and aligned with your style.
  

If you’re using AI in your writing process, the goal shouldn’t be to hide it but to make sure the final result reflects your own thinking and voice. While a humanizer can help you get started, be sure to rephrase AI output in your own words and adjust the tone to match your natural style. Additionally, Grammarly’s features are designed to support transparency and responsible AI use so you can focus on creating content that reflects your own thinking and voice. 
Here’s how Grammarly supports you:

• AI detection lets you check how your writing sounds and see where you might want to add more of your personal voice.
  
• Plagiarism detection compares your work against online sources to make sure your writing is original and properly attributed.
  
• Citations help you easily and clearly acknowledge your sources, whether you’re referencing AI tools, websites, or other materials, making it easier to maintain transparency and meet academic or professional standards.
  
• Grammarly Authorship tracks how your text was created, giving you a clear record of how your work came together. This can be useful for proving originality and navigating questions about how your writing was developed.