Free Tool

Readability Checker

Paste any content and get an instant Flesch score, Gunning Fog index, passive voice %, sentence histogram, and specific suggestions to make your writing clearer.

Your Content0 chars (min 50)
0 words0 sentences0 paragraphs
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Paste your content on the left and readability scores will appear here instantly — no button needed.

Flesch Score
Ease of reading (0–100)
Gunning Fog
Grade level needed to understand
Passive Voice
% of sentences using passive voice
Sentence Histogram
Distribution of sentence lengths

Flesch Score Reference

90–100
Very Easy
Age 11 / 5th grade
80–90
Easy
Age 12 / 6th grade
70–80
Fairly Easy
Age 13 / 7th grade
60–70
Standard
8th–9th grade
50–60
Fairly Difficult
10th–12th grade
30–50
Difficult
College level
0–30
Very Difficult
Professional / Academic

Also check your E-E-A-T score

Readable content is only half the picture. Credify's E-E-A-T Checker scores your content on the signals Google uses to decide if it deserves to rank.

Check E-E-A-T Score Free →