This free AI sentence rewriter rewrites a sentence, a paragraph or a few paragraphs (up to 5,000 characters) toward one of eight goals, from a fresh rewrite to a grammar-only fix. It highlights the new words in the result and shows the reading grade of your original next to the rewrite, so you can see what changed and whether it got easier to read. No signup is needed.
How to rewrite a sentence with AI
- Paste the sentence or paragraph you want to improve into the box.
- Choose a goal: rewrite, paraphrase, make it shorter, expand, simplify, more formal, more persuasive, or fix grammar only.
- Pick a tone: professional, casual, persuasive, academic, simple and clear, or creative.
- Click Rewrite Text.
- Scan the highlighted words to see what the AI changed, and compare the original and rewritten reading grades.
- Copy the version you like, or click Rewrite again for a different take.
Eight rewrite goals for different jobs
"Rewrite this" means different things depending on the problem, so the tool asks what you want the new version to do.
- Rewrite gives fresh wording with the same meaning, the default when a sentence sounds clunky.
- Paraphrase changes both words and sentence structure, useful when you are restating an idea in your own phrasing.
- Make it shorter cuts padding while keeping every key point.
- Expand adds explanation and supporting detail when a point is too thin.
- Simplify moves the text to plainer language a general reader follows.
- More formal lifts casual writing for reports, applications and client email.
- More persuasive sharpens the case for an offer, request or argument.
- Fix grammar only corrects grammar, spelling and punctuation with the smallest possible changes, keeping your wording and voice.
See exactly what changed
After a rewrite, words that were not in your original are highlighted, so you can tell in a few seconds whether the AI touched the phrase you cared about or left your key terms alone. Short words are skipped to keep the highlighting readable. If too much changed, try Fix grammar only or Rewrite with the Simple and clear tone for a lighter edit.
Readability before and after
Above the result you see two badges: the reading grade and a label (Easy, Standard, Difficult or Complex) for your original and for the rewrite. The rewrite badge is marked when it reads more easily than what you started with. A lower grade is not always the goal, since academic writing can reasonably sit higher, but for email, web copy and instructions an easier score usually means more people finish reading.
Getting a natural-sounding rewrite
People often ask for the most natural AI sentence rewriter, and the honest answer is that the input decides a lot. Give the tool a full sentence or paragraph rather than fragments, so it has context. Choose the tone that matches where the text will appear. Then read the result aloud and put back any word that only you would use. AI rewrites are smooth by default; your own specific details are what keep the text sounding like you.
A rewriter changes wording, not facts. It will not fix a wrong number or add a source, and paraphrasing someone else's work still needs a citation. For other writing jobs, the AI email generator drafts full emails and replies, the AI headline generator writes titles and hooks, and the AI prompt generator helps when you want a chatbot to do a bigger rewrite.
AI sentence rewriter FAQ
Is this AI sentence rewriter free?
Yes. It is free to use with no signup and no account, and you can rewrite as many times as you need.
How much text can I rewrite at once?
Up to 5,000 characters, roughly 700 to 900 words. That covers a single sentence, a paragraph or a short section of an essay or article.
What is the difference between rewriting and paraphrasing?
Rewrite mainly refreshes the wording. Paraphrase also changes the sentence structure, so the result reads more like a restatement than an edit. Both keep the original meaning.
Can it fix grammar without changing my writing style?
Yes. Choose Fix grammar only. It corrects grammar, spelling and punctuation with the smallest changes it can and keeps your original wording.
Will rewritten text pass an AI detector?
Do not count on it. Rewriting changes wording, but detectors look at style too, and the honest fix is to add your own thinking and details. If the work is for a class, follow your school's rules on AI tools.
Does the readability grade use Flesch-Kincaid?
Yes. The grade comes from the Flesch-Kincaid formula, based on average sentence length and syllables per word, and the label comes from the matching reading ease score.