Flesch Reading Ease Calculator
Calculate Flesch Reading Ease score for any text. Score 60–70 targets a general audience. Free browser-based tool.
How Flesch Reading Ease Calculator Works
Flesch Score = 206.835 − (1.015 × avg sentence length) − (84.6 × avg syllables per word). Higher score = easier to read. Score of 60–70 targets general adult readability.
This tool uses industry-standard formulas and calculations to provide accurate results instantly. All calculations happen in your browser — your data never leaves your device, ensuring complete privacy and security.
Whether you're optimizing marketing campaigns, managing finances, or processing data, this tool gives you the precision and speed you need to make informed decisions quickly.
Flesch Reading Ease Score Guide
| Label | Meaning |
|---|---|
| 70–100 | Easy — 6th–8th grade level, general consumer audience |
| 60–70 | Standard — general adult readability target |
| 50–60 | Fairly difficult — professional audience |
| Below 50 | Difficult — academic or legal content |
Frequently Asked Questions
What is the Flesch Reading Ease score?
The Flesch Reading Ease score rates text on a 0–100 scale where higher scores mean easier reading. Developed by Rudolf Flesch in 1948. A score of 60–70 is the general adult target. US government agencies are required by law to write public documents at 60+.
What is a good Flesch score?
Depends on your audience. Consumer-facing content: aim for 60–70. Technical documentation: 40–60 is acceptable. Legal or academic: below 40 is expected. Yoast SEO flags content below 60 as needing improvement for general blog readability.
How do I improve my Flesch score?
Two levers: shorter sentences (aim for 15–20 words average) and simpler words (prefer one or two syllables over polysyllabic alternatives). Break long sentences at conjunctions. Replace 'utilise' with 'use', 'demonstrate' with 'show', 'approximately' with 'about'.
Is my data stored?
No.
Can I use this on mobile?
Yes.
About This Tool
Built by the Calcyo team and last updated June 2026. All calculations follow industry-standard methodology. No data leaves your browser — calculations run entirely client-side using JavaScript. If you spot an error in the formula or benchmark data, email us at support@calcyo.xyz.