Text Similarity Checker

About Text Similarity Checker

When you rewrite or compare two versions of a text, it helps to know how much wording they share. This tool measures overlap between two texts by comparing individual words and three-word phrases, and shows the result as percentages. It is useful for checking how different a revision is from a draft or how closely two product descriptions match. It does not search the internet and is not a plagiarism detector.

Example

Input: two similar paragraphs about a product. Output: a word overlap of 62% and a three-word phrase overlap of 18%, which suggests the two texts use the same vocabulary but are phrased differently.

Tips for better results

• Compare only the text you own or have permission to use.
• A high word overlap is normal for texts about the same topic. The phrase overlap is a better sign of similar wording.
• For academic integrity checks, use your school's approved plagiarism service.

When to use Text Similarity Checker

The Text Similarity Checker is useful when you want a quick numeric comparison between two pieces of text you already have. Writers can see how different a rewrite is from the original draft, marketers can check whether two product descriptions are too close, and students can compare their revision with an earlier version. It compares only the two texts you paste. It does not search the web, so it cannot show whether your work matches other sources.

Real-world uses

• A copywriter has two versions of a product description and wants to see whether the rewrite is different enough to publish on a second page.
• A student wants to compare a first draft with a heavily revised version to see how much of the wording changed.
• A site owner wants to check whether two category descriptions share so much phrasing that one should be rewritten.
• A teacher wants to compare two versions of a worksheet to confirm how much of the original question wording remains.

Common mistakes to avoid

• Treating a low similarity percentage as proof that work is original, when the tool only compares the two texts you gave it.
• Comparing very short passages, where a few shared common words can produce a high percentage that means little.
• Using the number alone and skipping a read of both texts, since similar meaning can exist even when the exact wording is different.

Compare two texts and see how much wording they share. It works instantly in your browser, so there is nothing to install and nothing to upload. Text Similarity Checker is part of our collection of 100 free tools in the Student & Study category.

How to use it

1. Enter your information or choose a file in the tool above.
2. Your result appears right below the tool.
3. Copy the result, or adjust your input and try again.

Frequently asked questions

Can it tell me if I copied from the internet?

No. It compares only the two texts you paste, so it cannot find matches across the web. Use your school's approved service for academic integrity checks.

What percentage counts as too similar?

There is no universal threshold. Texts on the same topic often share many common words, so focus on repeated phrases and on whatever rule your teacher, client or publisher has set.

Is Text Similarity Checker free to use?

Yes. Text Similarity Checker is completely free and you do not need to create an account.

Is my data uploaded anywhere?

No. This tool runs in your browser, so what you type or choose stays on your device.

How accurate are the results?

Calculations use standard formulas, but always double-check important figures, especially for money, health or legal decisions.