LowercaseOnline β€” Free Online Text Tools

πŸ“– Readability Checker

Paste your content to instantly calculate readability scores β€” Flesch-Kincaid, Gunning Fog, SMOG, and more.

Words: 0   Sentences: 0   Syllables: 0   Avg words/sent: 0   Avg syls/word: 0
Paste text on the left to see readability scores.

Readability Score Guide

Flesch Reading Ease: 0–100 scale. Higher = easier. 60–70 = plain English (8th grade). Aim for 60+ for general audiences.

Flesch-Kincaid Grade: US school grade level. Grade 8 = accessible to most adults. The average American reads at a 7th–8th grade level.

Gunning Fog: Years of education needed. <12 = accessible. Many popular newspapers target Fog index of 8–10.

SMOG Index: Grades of education needed to understand the text. Reliable for texts of 30+ sentences.