AI Sentence Expander

The AI Sentence Expander turns a short sentence or paragraph into a longer one that says more, not the same thing in more words. Set the length you need, from 1.5 times longer to an exact word count, choose what to add (details, examples, reasons, description, transitions or a counterpoint) and the style, and get three different expanded versions.

What makes it different

• It hits your word count. Every version is measured against your target, and one that comes out short is expanded again automatically.
• You see what was added. The additions are highlighted against your original, so you know exactly what is new.
• New facts are flagged. Numbers, names and sources that weren't in your text are listed for you to check.
• No padding. Filler phrases are highlighted, and Tighter removes them.

How to expand a sentence

1. Type or paste your sentence or paragraph.
2. Choose how much longer, what to add and the style.
3. Click Expand my text and compare the three versions.
4. Edit the one you like, check any flagged facts, then copy it. Use Longer, Tighter or Simpler to adjust it.

Tips for expanding writing

• Ask what the reader would ask next. Why? For example? So what? Each answer is a sentence worth adding.
• Choose one or two ways to expand. Details and reasons suit essays; description suits stories.
• Keep your voice. The Keep my voice style matches the tone of your original.
• Check the facts. Replace any flagged figure with a real one from your sources.

Related tools

Reword your text with the AI Paraphraser, make it read more naturally with the AI Text Humanizer, or check it with the AI Grammar Checker. To go the other way, shorten long text with the AI Text Summarizer.

Frequently asked questions

How do I make a sentence longer?

Add something the reader doesn't know yet: a specific detail, an example, the reason behind it, or what follows from it. Type your sentence, choose how much longer it should be and what to add, and the expander writes three versions that do exactly that, with the new parts highlighted.

Can it reach a specific word count?

Yes. Choose Exact word count and type the number of words you need. Each version is checked against the target, and a version that comes out short is expanded again before you see it. The word count of every version is shown next to your target.

Will it add facts that aren't true?

It is told not to invent statistics, studies, quotes or named sources, and anything new of that kind is flagged: numbers, names and sources that weren't in your text are listed under each version so you can check them before you use it.

Is the expanded text just filler?

No. Each version is asked to add substance, and phrases that read as padding, such as "it is important to note" or "plays a crucial role", are highlighted in the text, including in your own edits. Tighter removes any that remain.

Can I expand a whole paragraph?

Yes, anything from a single sentence to about 600 words. Longer texts keep their paragraphs, and the three versions develop them in different ways.

Is it free?

Yes. Every day you get free AI runs, and each run gives you three versions. Comparing, editing, copying and the fact and filler checks are always free, and the examples on this page don't use a run at all.