Quirkulator

Text & Readability Tools

18 calculators covering counting words and scoring readability, each with its formula and worked examples.

Text & Readability Tools brings together 18 calculators for counting words and scoring readability, including Automated Readability Index Calculator, Flesch Reading Ease Calculator, Lexical Density Calculator and SMOG Readability Calculator.

These are separate pages rather than one tool with a mode switch because the inputs differ, the interpretation differs, and the question behind each one is different. Each page opens with the formula it uses, defines every variable, and walks the calculation through real numbers before you type anything.

All 18 pages compute in your browser: nothing you type is sent anywhere, and results update as you edit. Each one carries worked examples, interpretation bands where a score needs context, and a FAQ answering what people actually ask about that calculation.

The collection is part of Text & Web Tools, and every page links to the neighbouring calculations you usually need next.

18 pages in this collection

Automated Readability Index CalculatorGrade text from characters per word and words per sentence.Character CounterCount characters with spaces, without spaces, and letters only.Coleman-Liau Index CalculatorGrade text using letters per word instead of syllables.Flesch Reading Ease CalculatorScore any passage on the 0–100 Flesch Reading Ease scale.Flesch-Kincaid Grade CalculatorConvert a passage into the US school grade needed to read it.Gunning Fog Index CalculatorScore text on the Fog index, which keys off long words rather than syllables.Keyword Density CalculatorFind how often a phrase appears as a share of total words.Lexical Density CalculatorMeasure the share of content words against grammatical filler.Paragraph CounterCount paragraphs and check how much text each one is carrying.Reading Time CalculatorEstimate how long a passage takes to read silently at your chosen pace.Sentence CounterCount sentences and see how evenly length is distributed across them.SMOG Readability CalculatorApply the SMOG grade, the formula health writers are told to use.Speaking Time CalculatorWork out how long a script runs when spoken, and how much to cut.Syllable Count EstimatorEstimate syllables in a passage and see how many words are polysyllabic.Text to URL Slug ConverterTurn a title into a clean, lowercase, hyphenated URL slug.Typing Speed WPM CalculatorConvert a typed passage and a time into gross and net words per minute.Unique Word CounterCount distinct words and measure vocabulary repetition.Word CounterCount the words in any passage, with sentence and average-length figures.

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