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Flesch Reading Ease Calculator

Estimate English readability using the Flesch Reading Ease formula.

Reviewed/updated September 8, 2026
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What is the Flesch Reading Ease Calculator?

Estimate English readability using the Flesch Reading Ease formula. ITS Research Solution keeps the interactive tool above the explanation so you can calculate first and then review the method used.

Formula or method

Score = 206.835 − 1.015(words/sentences) − 84.6(syllables/words).

How to use this tool

Enter the requested values using consistent units, run the calculation and review the main result plus any supporting values. Higher scores generally indicate easier English prose.

Interpretation and limitations

Syllables are estimated algorithmically, so use the result as a writing aid rather than a linguistic gold standard. Always check source data, units, rounding and discipline-specific requirements before using a result in assessed, published, regulated or high-stakes work.

Questions

Frequently asked questions

How is this result calculated?

Score = 206.835 u2212 1.015(words/sentences) u2212 84.6(syllables/words).

Can I use this result in formal academic or research work?

Use it as a transparent calculation aid, then verify the assumptions, units, rounding and any institution-, journal- or field-specific requirements before formal use.