Flesch Reading Ease & Readability Analyzer
Plain English (8th-9th grade level).
About Flesch Reading Ease Calculator
The Flesch Reading Ease Score Calculator evaluates text using the classic formula ($206.835 - 1.015 \left(\frac{\text{words}}{\text{sentences}}\right) - 84.6 \left(\frac{\text{syllables}}{\text{words}}\right)$), rating accessibility from 0 (very confusing) to 100 (very easy).
How to Use Flesch Reading Ease Calculator
Step 1
Paste your draft copy into the text input area.
Step 2
Review your Flesch Reading Ease score and difficulty rating badge.
Step 3
Edit long sentences or substitute multi-syllable words to improve the score.
Step 4
Click "Copy Score".
Practical Use Cases for Flesch Reading Ease Calculator
Optimizing Marketing Landing Pages for Maximum Conversions
Audit homepage copy to ensure a Flesch score above 70, ensuring visitors quickly grasp value propositions without cognitive friction.
Verifying Compliance with Plain Writing Acts
Ensure government and financial service communications meet state-mandated minimum Flesch Reading Ease thresholds (typically $\\ge 60$).
Input & Output Examples
Evaluating Conversational Blog Post
Text with short sentences and common vocabulary
Score: `78.2 / 100` | Rating: "Fairly Easy to Read" | US Grade Level: 6th Grade (11-12 years old)
Key Features & Performance
- ✓Computes exact Flesch Reading Ease score (0 to 100+ scale).
- ✓Provides standard Flesch rating tiers: Very Difficult (0-30), Difficult (30-50), Fairly Difficult (50-60), Standard (60-70), Fairly Easy (70-80), Easy (80-90), Very Easy (90-100).
- ✓Displays real-time counts for words, sentences, and syllables.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy score summary.
Key Terminology & Definitions
Flesch Reading Ease Formula
A readability test devised by Rudolf Flesch in 1948 measuring text comprehension ease based on sentence length and syllable density.
Syllables Per Word (ASW)
The average number of syllables per word in a text; higher syllable counts correlate directly with harder reading difficulty.