ToolKitSphereRegex Split Tool
Split text into an array or lines by a custom regex pattern.
Related tools
Regex Tester & Matcher
Test regular expressions with real-time match highlighting, flags, and capture groups.
Regex Find & Replace
Find and replace text using regular expressions and capture groups.
Regex Explainer & Pattern Breakdown
Deconstruct and explain regular expression tokens, quantifiers, and groups in plain English.
String Slice & Substring Tool
Extract substrings by start index, end index, length, or step.
Text to CSV Converter
Split delimiter-separated lines or space-separated text into structured CSV.
Splitting text on a single fixed character like a comma is easy, but splitting on multiple delimiters, whitespace runs, or a more complex pattern needs regular expressions, and this regex split tool makes that instant and visual. Developers parsing irregular log formats, data cleaners breaking apart inconsistently delimited values, and anyone processing text with mixed separators can enter a regex pattern and immediately see the input broken into individual pieces, either as a list or an array-style output. It removes the need to write and test a script just to check how a split pattern behaves. Because it runs entirely in your browser, none of your text ever leaves your device. Paste your text and enter a split pattern below to see the result instantly.
Features
- Split text using any custom regular expression pattern
- Output results as separate lines or a JSON-style array
- Handles multiple or inconsistent delimiters in one pass
- Support for common regex flags
- Instant live preview as you adjust the pattern
- One-click copy of the split results
- Works on structured or messy delimited text
- Useful for testing split logic before writing code
Why use this regex split tool?
- Splits text instantly with real-time pattern feedback
- Keeps your data private by processing it entirely client-side
- Accurately handles complex, multi-delimiter regex patterns
- Clear before-and-after view of the splitting result
- Free to use with no signup or restrictions
Frequently asked questions
How is regex split different from splitting on a single character?
A simple split only breaks text on one fixed character or string, while a regex split can break on flexible patterns like any run of whitespace, multiple different delimiters, or conditional patterns.
Can I split text on multiple different delimiters at once?
Yes, using a regex pattern like [,;|] lets you split on commas, semicolons, and pipes simultaneously in a single operation.
What output formats does this tool provide?
You can view split results as separate lines for easy reading, or as a JSON-style array format that mirrors what a programming language's split function would return.
Can I split text using whitespace as the pattern?
Yes, a pattern like \s+ splits on any run of one or more whitespace characters, which is useful for cleaning up inconsistently spaced data.
Is this tool useful for testing regex patterns before using them in code?
Yes, it's a quick way to visually confirm exactly how a given regex split pattern will break apart your text before implementing the same logic in a script.
Is my text uploaded anywhere when I use this splitter?
No, all splitting logic runs client-side in your browser using JavaScript's regex engine, and your text is never sent to a server.
From the blog
Regex Lookahead and Lookbehind Made Simple
Regex lookahead and lookbehind explained with working examples: password rules, price extraction, thousands separators, and which engines actually support them.
Regex Character Classes and Quantifiers Explained
How regex character classes and quantifiers really work: ranges, negation, \d \w \s across engines, Unicode classes, and every repetition form with its gotchas.
The Complete Guide to Regular Expressions
A complete regex guide covering regex syntax, character classes, quantifiers, groups, flags, and performance — with a regex cheat sheet and free live tools.