Reading Level Checker – Flesch Score & Grade Level
Paste your content below to instantly calculate the Flesch Reading Ease score, Flesch-Kincaid Grade Level, average sentence length, and syllable count. Get audience recommendations and tips to simplify your writing. Your data never leaves your device — all processing runs locally.
Reading Level Checker
Readability Scores
Flesch Reading Ease Scale
Why Use the Tools Oasis Reading Level Checker?
Tools Oasis gives you instant readability analysis so you can write content that connects with your audience. Whether you're writing a blog post for a general audience or technical documentation, knowing your reading level is key.
Flesch Reading Ease score
Higher Flesch score = easier to read. Academic papers score ~20; popular fiction ~70; plain English ~90.
In-Browser Analysis
All metrics are computed locally — no data ever leaves your browser tab.
Instant Feedback
Results update as you type. No waiting for server responses or API calls.
SEO-Ready Output
Formatted for easy copy-paste into your CMS, reports, or client deliverables.
Frequently Asked Questions
01 What is Flesch Reading Ease?
Flesch Reading Ease is a readability formula developed by Rudolf Flesch. It produces a score between 0 and 100, where higher scores indicate easier-to-read text. A score of 60-70 is considered standard for general web content. Tools Oasis calculates this instantly for any text you paste.
02 What is a good readability score for blog posts?
For blog posts targeting a general audience, aim for a Flesch Reading Ease score of 60-70 (8th-9th grade level). For wider accessibility, a score of 70+ is ideal. Most popular online content is written at a 7th-8th grade level.
03 How is grade level different from Flesch Reading Ease?
Flesch Reading Ease gives a score from 0-100 (higher = easier). Flesch-Kincaid Grade Level converts this into a U.S. school grade level (e.g., 8.0 means an 8th grader can understand it). They use similar inputs but different formulas.
04 Is my content stored or sent to a server?
No. All readability analysis happens entirely in your browser using JavaScript. Tools Oasis never sends, stores, or logs any of your text. Your content stays 100% on your device.