Analyze Your Text
Paste English text, choose settings, and calculate multiple readability scores for classroom materials, reports, articles, and learning resources.
Example Data Table
| Sample | Words | Sentences | Flesch Ease | Overall Grade | Band |
|---|---|---|---|---|---|
| Primary Story | 22 | 3 | 87.87 | 4.52 | Upper Elementary |
| Science Passage | 20 | 2 | 19.03 | 15.82 | College |
| Policy Excerpt | 20 | 1 | -41.89 | 24.93 | Graduate / Professional |
These rows are generated by the same calculator logic, so you can compare your text against realistic classroom and academic examples.
Formula Used
The calculator applies several established readability formulas to estimate how difficult a text may feel for readers.
- Flesch Reading Ease: 206.835 − 1.015 × (words ÷ sentences) − 84.6 × (syllables ÷ words)
- Flesch-Kincaid Grade Level: 0.39 × (words ÷ sentences) + 11.8 × (syllables ÷ words) − 15.59
- Gunning Fog Index: 0.4 × [(words ÷ sentences) + 100 × (complex words ÷ words)]
- SMOG Index: 1.043 × √(complex words × 30 ÷ sentences) + 3.1291
- Coleman-Liau Index: 0.0588 × L − 0.296 × S − 15.8, where L and S are per 100 words
- ARI: 4.71 × (characters ÷ words) + 0.5 × (words ÷ sentences) − 21.43
The overall grade is the average of the available grade-style formulas. This combined estimate helps reduce dependence on a single model.
How to Use This Calculator
- Paste a clear English passage into the large text box.
- Choose the complex-word threshold that best matches your review style.
- Select your preferred decimal precision for the output.
- Pick the intended audience to compare fit and recommendation text.
- Press Calculate Reading Level to view results above the form.
- Review grade scores, ease score, counts, and instructional guidance.
- Use the export buttons to save the analysis as CSV or PDF.
- Revise the passage and test it again to improve clarity.
Frequently Asked Questions
1. What does a reading level score mean?
A reading level score estimates how difficult a passage may feel for readers. It usually reflects sentence length, word length, syllables, and text structure.
2. Which score should teachers trust most?
No single score is perfect. Use several formulas together, then compare them with classroom goals, student background knowledge, and teacher judgment.
3. Why can two formulas give different grade levels?
Each formula emphasizes different features. Some focus on syllables, others on letters or long words. That is why combined review is more balanced.
4. Is this calculator accurate for non-English text?
It works best with English prose. Other languages use different word patterns, sentence rules, and syllable structures, which can reduce accuracy.
5. What is a good Flesch Reading Ease score?
Scores around 60 to 80 are often comfortable for general readers. Lower scores suggest denser writing, while higher scores indicate easier text.
6. How can I lower a difficult reading level?
Use shorter sentences, simpler vocabulary, active voice, and direct structure. Breaking long paragraphs and removing jargon can also help.
7. Why does the SMOG result sometimes not appear?
SMOG is more reliable when a passage has at least three sentences. Very short samples do not provide enough structure for a stable estimate.
8. Can readability replace teacher evaluation?
No. Readability scores are helpful screening tools, but they cannot measure student interest, prior knowledge, tone, or content quality.