Readability Score (Flesch) Calculator

About this tool

Calculate the Flesch Reading Ease score of your text. Higher scores (90-100) are very easy to read; lower scores (0-30) are very difficult. A standard writing-clarity metric.

Example

Input: (a clear paragraph)

Output: Score ≈ 70 (Easy)

How to use

Paste or type your text into the box above, then read or copy the result. Everything runs privately in your browser, your text is never uploaded to a server.

How to use this tool

1. Paste or type the text you want to check into the input box.
2. Click the calculate button to analyze the text.
3. Read the Flesch Reading Ease score and compare it with the readability label or explanation.
4. Revise the text if needed, then run the check again to see whether the score improves.

Step by step, what happens

1. The tool scans your text and splits it into sentences and words.
2. It estimates how easy the text is to read by looking at sentence length and word complexity.
3. It calculates the Flesch Reading Ease score and shows the result on a simple scale.
4. The tool also helps you interpret the score so you can tell whether the text is very easy, standard, or difficult to read.

Worked example

Here is a short product message you might want to test for clarity.

Input: Please read the guide before you start. It explains the basic steps clearly.

1. The tool reads both sentences and counts the words in each one.
2. It checks how complex the wording and sentence structure are, then produces a readability score.

Tips and common mistakes

• Shorter sentences usually increase the score, so long run-on sentences can make text harder to read.
• Simple words are easier for the tool to score well, while dense technical wording can lower readability.
• This tool measures readability, not grammar, so a clean score does not mean the text is error-free.
• If you are editing docs or user-facing copy, test one paragraph at a time so you can spot the hardest section.

Frequently asked questions