Free Informal to Formal Converter

Quickly convert any sentence from informal to formal, or vice versa, using Rephrase, ProWritingAid’s AI sentence rewriter.

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I’ve tried every free and paid writing/editing/grammar extension out there, and this by far is the best one my team and I have found. It’s fast, accurate, and really helps improve your writing beyond simple grammar suggestions.

ProWritingAid has a Rephrase feature now—I just tried it today, and it helps so much! Like a magic✨ editor!

I am continually impressed with the positive input this program offers me every time I sit down to write. My skills have improved immensely since I bought it, and I heartily recommend it to anyone who wants to have more confidence in their own writing.

Convert sentences from informal to formal in just a few clicks

Choose how to rewrite

Give your writing a more formal or informal tone, try shortening or expanding text, or even add sensory details. You choose how you want to rewrite.

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Translate to fluent English

Write in your native language, and use Rephrase to convert your text into fluent English.

Works wherever you do

Rewrite sentences across all the apps you use, whether they’re on desktop or online.

Informal to formal converter FAQs

What Is ProWritingAid?

ProWritingAid is a comprehensive editing tool that serves as a grammar checker and writing coach. It also has AI capabilities to help you rewrite sentences and overcome writer's block.

Sign up today to get advanced grammar and spelling checks, style suggestions, and access to powerful AI features to make writing a breeze.

Will ProWritingAid write content for me?

ProWritingAid isn't a content generation tool, so it won’t write for you. Instead, it helps you reword sentences without changing the meaning or intent.

Is ProWritingAid free?

In the free plan, you get up to ten rephrases per day, which you need to convert sentences from informal to formal. If you need more rephrases, you can upgrade to a paid plan.

Does ProWritingAid autocorrect?

ProWritingAid offers clever suggestions to help you identify, correct, and improve your writing. However, the choice to accept or ignore these suggestions is entirely yours.