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Flesch-Kincaid Grade Level Calculator

Estimate the reading grade level of pasted text.

Last updated: May 29, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution

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What is Flesch-Kincaid Grade Level Calculator?

The Flesch-Kincaid Grade Level Calculator estimates the US school grade needed to understand a text based on sentence length and syllable density. It also shows Flesch Reading Ease and supporting counts.

How to Use Flesch-Kincaid Grade Level Calculator

1

Paste text into the analyzer.

2

Review the grade level and reading ease score.

3

Use sentence and syllable averages to decide what to simplify.

4

Copy the report if needed.

Common Use Cases

  • Checking support articles for clarity.
  • Simplifying product copy.
  • Reviewing classroom or training materials.
  • Estimating reading difficulty before publishing.

Example Input and Output

Text
Clear writing helps readers understand your message quickly.
Score
Flesch-Kincaid Grade Level: about 6-8

Frequently Asked Questions

Is the grade level exact?
No. It is an estimate based on sentence length and syllables, not subject matter or context.
What score should I target?
For broad public content, many teams aim for roughly grade 6-9 depending on audience and topic.
Is my text uploaded?
No. The calculation runs in your browser.