Text Chunk Splitter

Text Chunk Splitter breaks a long passage into evenly sized pieces, either by a fixed number of characters or a fixed number of words, and lays them out in a numbered table. Instead of manually counting where to cut, you set the chunk size once and the tool slices the whole text for you, showing each piece with its own index and length so you can review the result at a glance.

It is built for the many situations where text must fit inside a size limit. Writers split content to fit SMS segments, developers break prompts into windows an API will accept, and educators divide passages into bite-sized reading blocks. Anywhere a maximum length matters, chunking by hand is slow and error-prone, and this tool removes that friction entirely.

All processing runs locally in your browser using JavaScript, with no upload and no account. Paste your text, choose whether to chunk by characters or words, set the size, and read the numbered table of chunks. Because the work never leaves your device, sensitive drafts and internal documents stay private while you prepare them.

Features

• Splits by character count or by word count, whichever your limit requires.
• Lets you set any chunk size so you can match SMS, prompt, or field limits.
• Numbers every chunk and shows its exact length for quick verification.
• Presents the chunks in a clean table that is easy to scan and export.
• Preserves the original text exactly when chunking by characters.
• Exports the table to CSV, XLSX, or TXT, or copies it to the clipboard.
• Runs entirely in your browser so long documents stay private.

How to use Text Chunk Splitter

1. Paste the long text you want to break apart into the input box.
2. Choose whether to split by characters or by words using the mode selector.
3. Set the chunk size to the maximum length each piece should reach.
4. Read the numbered table showing each chunk and its length.
5. Check the stats panel for the total number of chunks produced.
6. Export the table or copy it for pasting into your destination.

Benefits

• Fits long content into SMS segments, tweets, or other strict length caps.
• Breaks prompts into windows that language-model APIs will accept.
• Divides reading passages into consistent blocks for study or testing.
• Removes the tedium and mistakes of counting characters by hand.
• Keeps sensitive documents private because nothing is uploaded anywhere.
• Gives an exportable table so chunks drop straight into a spreadsheet.

Character mode slices the text at exact positions, so the pieces reassemble perfectly if you join them back together, which matters when whitespace and line breaks are significant. Word mode instead counts whole words and keeps them intact, so no word is ever cut in half — ideal when readability of each chunk matters more than an exact character boundary. Choosing the right mode depends on whether your limit is measured in characters or in words.

The numbered table makes it easy to process chunks one at a time: paste the first, act on it, then move to the next without losing your place. When a downstream system enforces a hard limit, set the chunk size a little below that limit to leave room for prefixes, numbering, or separators you may add later. Export to CSV when you want to track which chunk was handled in a spreadsheet.