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Sentence Counter

Instantly count sentences, paragraphs, words, and characters in any text. Free online sentence counter with real-time analysis.

Updated

What is the Sentence Counter?

Use the Sentence Counter to review sentence, paragraph, word, and character counts, along with a Flesch Reading Ease estimate. Results update as you type or paste text.

What is a Sentence Counter?

Sentence boundaries are estimated from punctuation. The tool accounts for some common English abbreviations, decimals, and URLs, but sentence counting is not perfect for every text or language.

Key Features

  • Live results — Counts update as you edit
  • Text statistics — Review sentence, paragraph, word, and character counts
  • Flesch Reading Ease — See an approximate score based on sentence and syllable estimates

Who Uses a Sentence Counter?

  • Writers & Authors — Track sentence variety and paragraph structure
  • Students — Meet word count and sentence requirements for assignments
  • Content editors — Review sentence and paragraph structure
  • Editors & Proofreaders — Quickly assess text structure and length
  • ESL Learners — Practice proper sentence construction

Start typing or paste your text above to see the results.

How it works

The sentence counter applies punctuation and text-counting rules to estimate sentence and readability statistics.

Input

Simply type or paste your text into the input area. The tool analyzes your content in real-time as you type — no buttons to press.

Analysis Process

  1. Text Preparation — The tool works with the entered text and uses whitespace when counting words.

  2. Terminator Handling — Some punctuation that can occur inside abbreviations, decimals, URLs, and ellipses is handled before sentence splitting:

  • Abbreviations (Mr., Mrs., Dr., etc.)
  • Decimal numbers (3.14, 98.6)
  • URLs and domains (example.com)
  • Ellipses (...)

  1. Sentence Splitting — Text is split on actual sentence terminators (., !, ?). Empty segments are filtered out.

  2. Paragraph Detection — Paragraphs are identified by blank-line separators (\n\n).

  3. Word Counting — Words are counted as whitespace-separated tokens of non-zero length.

  4. Character Counting — Both with-spaces and without-spaces totals are calculated.

  5. Reading Ease — Flesch Reading Ease uses the standard formula with an estimated English syllable count:

Score = 206.835 − (1.015 × ASL) − (84.6 × ASW)

Where:

  • ASL = Average Sentence Length (words ÷ sentences)
  • ASW = Average Syllables per Word

Output

The tool displays comprehensive statistics:

Statistic Description
Sentences Number of complete sentences
Paragraphs Number of text blocks separated by blank lines
Words Total word count
Characters (with spaces) All characters including whitespace
Characters (without spaces) Characters excluding whitespace
Avg. Words/Sentence Average sentence length
Avg. Sentences/Paragraph Average paragraph density
Flesch Reading Ease 0–100 readability score

Edge Cases Handled

  • Empty text shows zero counts
  • Text without terminators is treated as one sentence if it contains words
  • Multiple consecutive terminators count as a single sentence boundary
  • Leading/trailing whitespace is ignored

Examples

Count sentences in a paragraph

Analyze a short paragraph to see sentence, word, and character counts.

Dr. Smith visited the U.S.A. last week. She enjoyed the trip! The weather was wonderful.
 
Sentences: 3, Words: 15, Characters (no spaces): 74, Paragraphs: 1

Count sentences with abbreviations

The tool correctly handles abbreviations like Mr., Mrs., and Dr. that would otherwise inflate sentence counts.

Mr. Jones and Mrs. Smith met at 3:15 p.m. They discussed the project in detail.
 
Sentences: 2, Words: 15, Characters (no spaces): 65, Paragraphs: 1

Analyze multi-paragraph text

Count paragraphs and analyze text with multiple sections separated by blank lines.

The first paragraph introduces the topic. It contains several sentences.

The second paragraph continues the discussion.

Finally, the third paragraph concludes.
 
Sentences: 4, Words: 21, Characters (no spaces): 139, Paragraphs: 3

Technical text with numbers

Handles decimal numbers, URLs, and technical content without inflating sentence counts.

The temperature was 98.6 degrees. Visit example.com for more info. The ratio is 3.14 to 1.
 
Sentences: 3, Words: 16, Characters (no spaces): 75, Paragraphs: 1

Frequently asked questions

How does the tool count sentences?

The tool uses ., !, and ? as sentence terminators and accounts for a selection of common English abbreviations, decimals, and URL-like text. Unusual abbreviations and punctuation can still affect the count.

What abbreviations are recognized?

It recognizes a selection of common abbreviations, titles, month/day names, and dotted initialisms. This list is not exhaustive.

How are paragraphs counted?

Paragraphs are text blocks separated by one or more blank lines. For example, two paragraphs separated by \n\n are counted as 2. Within a single paragraph, multiple sentences are counted individually.

What is Flesch Reading Ease?

Flesch Reading Ease is a readability estimate scored from 0–100; higher scores generally indicate easier text. This tool estimates syllables with a simple English-language heuristic, so the score is approximate:

  • 90–100: Very Easy (5th grade)
  • 80–89: Easy (6th grade)
  • 70–79: Fairly Easy (7th grade)
  • 60–69: Standard (8th–9th grade)
  • 50–59: Fairly Difficult (10th–12th grade)
  • 30–49: Difficult (College)
  • 0–29: Very Difficult (College graduate)

Can I use this for SEO content optimization?

The score can be one input when reviewing readability, but it is not a search-ranking measure or a universal target. The estimate is designed primarily for English text.

Does the tool work with languages other than English?

Sentence and paragraph detection uses ., !, and ? as terminators, so it may be useful for text in other languages that use those marks. Abbreviation handling and syllable estimates are English-focused. Word counts are whitespace-based rather than language-aware.

Is there a text length limit?

The tool can analyze text pasted into the page. Very large inputs may take longer depending on your device.

How accurate is the syllable counting?

Syllable counting uses a simple English-language heuristic, including vowel groups and a silent-e adjustment. It can miscount words, which also affects the reading-ease estimate.

Is my text saved or stored?

No. All analysis happens locally in your browser. Your text is never sent to any server and is not stored anywhere. When you refresh the page, the input is cleared.

Can I export the results?

You can copy any statistic to your clipboard using the copy buttons next to each result. You can also copy your full input text to reuse elsewhere.

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