Sentence Splitter

How to use

1. 1Paste any paragraph, article, email, or script into the input on the left.
2. 2Sentences appear on the right one per line, with stats for sentence count, average length, shortest, and longest.
3. 3Toggle the splitter behaviour, such as respecting existing line breaks, trimming each sentence, dropping empties, and a minimum word count to filter out fragments.
4. 4Pick an output separator (one per line, blank line between, or joined with a space) and an optional numbering style (1. 2. 3., [1] [2] [3], or (1) (2) (3)).
5. 5Add custom abbreviations like 'approx' or 'est' if your text uses domain-specific shortcuts you do not want to count as sentence boundaries.
6. 6Copy the output, replace the input with the split result, or load the sample to see how abbreviations, decimals, and quoted speech are handled.

About this tool

Sentence Splitter breaks any block of text into one sentence per line so you can count them, copy them, translate them, or feed them into another tool. The splitter looks for the usual terminal punctuation (period, question mark, exclamation mark, ellipsis, and the CJK fullwidth equivalents) and then runs three checks before committing to a boundary. First, a single period between two digits is treated as a decimal point so values like 3.14, $2.50, and version numbers stay intact. Second, the token immediately before a period is compared against a built-in abbreviation list covering common English titles (Mr., Mrs., Ms., Dr., Prof.), Latin and editorial shorthand (e.g., i.e., etc., cf., vs., et al.), geography and organisations (U.S.A., U.K., Inc., Ltd., Corp.), days and months (Jan., Feb., Mon., Tue.), and address shorthand (Ave., Blvd., Rd., Mt., St.) so a period after one of those does not break a sentence apart. Third, the splitter absorbs a single closing quote or bracket attached to the punctuation so dialogue like 'She said "Stop!" and he stopped.' splits between the two sentences and keeps the quotation marks with the line they belong to. Runs of terminators like '...' or '?!' are collapsed into a single boundary so the result never contains empty fragments, and the tool can optionally treat existing line breaks as natural boundaries which is useful for screenplays, dialogue, and already-formatted text. Output controls let you pick the separator (one per line, blank line between, or joined with a space), add decimal, bracket, or paren numbering, drop short fragments below a minimum word count, and extend the abbreviation list with your own tokens like 'approx', 'est', or domain-specific shortcuts. A live stats panel shows the sentence count, average words per sentence, shortest sentence, and longest sentence so you can spot rhythm issues at a glance. Useful for translators preparing source text for memory-assisted translation, language learners studying sentence structure, NLP and machine-learning engineers building corpora, screenwriters and playwrights formatting dialogue, content marketers checking sentence-length variety, technical writers extracting one sentence at a time for legal review, and anyone who needs to turn dense paragraphs into a clean per-line list. All splitting runs locally in the browser. The text you paste never leaves your device.

Free to use. Works in your browser. No signup, no login.