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📈 6 Industry Readability Formulas • Instant Text Analysis

Flesch-Kincaid Readability Score & Grade Level Analyzer

Calculate Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog, Coleman-Liau, and SMOG indices to optimize copy for search engines and your target audience.

Try Example:
51 words • 327 characters100% In-Browser Instant Calculation
Flesch Reading Ease Score
67.8/ 100
Standard / Plain English
Target: 8th – 9th Grade (Optimal Web Copy)
Silent Reading Time
~1 min

Based on 200 WPM

Speaking Time
~1 min

Based on 130 WPM

Standard Academic Grade Level Formulas

Flesch-Kincaid
Grade 7

US School Grade

Gunning Fog
8.2

Formal Education Yrs

Coleman-Liau
Grade 13.2

Character-Based Index

SMOG Index
8.8

Years to Comprehend

Auto Readability (ARI)
10.5

Grade Level Gauge

Complex Words (3+ Syl)
4 (8%)

Hard Words Count

Text Anatomy & Syllable Metrics

Total Words
51
Sentences
4
Avg Words/Sentence
12.8
Avg Syllables/Word
1.49
Grade 7 • 67.8/100 Reading Ease

How It Works

Simple, fast, and 100% secure in 3 steps.

1

Input Content

Paste your blog draft, newsletter, school paper, or product documentation.

2

Calculate 6 Formulas

Our engine evaluates word lengths, syllable counts, and sentence complexity across 6 formulas.

3

Refine for SEO & Readability

Aim for a Flesch Reading Ease score of 60–70 (8th grade) to maximize organic search rankings.

100% Free Forever
Client-Side Privacy
Zero Server Uploads
No Registration Needed

Key Features & Capabilities

Designed for accuracy, privacy, and maximum efficiency.

6 Global Readability Formulas

Calculates Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog, Coleman-Liau, SMOG, and ARI.

Syllable & Complex Word Counter

Identifies hard 3+ syllable vocabulary words that inflate reading difficulty.

Reading & Speaking Time Estimates

Calculates accurate pacing for keynote presentations, video voiceovers, and blog posts.

Frequently Asked Questions

Everything you need to know about using this tool.

For search engine optimization (SEO) and general online audiences, aim for a score between 60 and 70 (approx. 8th-grade level). Content in this range is easy for 85% of readers to comprehend quickly, improving time on page and reducing bounce rates.

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Free Readability Score & Flesch-Kincaid Grade Level Analyzer