Text Line Sorter
Paste your text below and sort lines alphabetically, numerically, or by length. Choose ascending or descending order, toggle case sensitivity, and optionally remove blank lines.
How the Text Line Sorter Works
This free online text sorter splits your input into individual lines and rearranges them according to your chosen sorting criteria. It supports three sorting methods: alphabetical sorting that compares lines as strings, numerical sorting that extracts and compares the leading number from each line, and length-based sorting that orders lines from shortest to longest or vice versa. Each method can be applied in ascending or descending order, with optional case-insensitive comparison and blank line removal.
Sorting Algorithm
The text is split into lines. Blank lines are optionally filtered out. For alphabetical sorting, lines are compared using string comparison with optional case folding. For numerical sorting, the leading number is extracted from each line using a regular expression and compared as a float. Lines without leading numbers sort to the end. For length sorting, lines are ordered by their character count. The direction option reverses the sort order when set to descending.
Why Sort Text Lines
Sorting lines of text is a fundamental operation in data processing, programming, and everyday document management. Alphabetically sorted lists are easier to scan and search manually. Sorted configuration files make it simpler to find specific entries and detect duplicates. Sorted import statements in source code improve readability and reduce merge conflicts. Sorted glossaries, indexes, and reference lists follow standard publishing conventions that readers expect.
Numerical sorting is essential when working with data that has numeric identifiers, scores, prices, or measurements. Sorting a list of products by price, students by score, or log entries by timestamp requires proper numerical comparison rather than alphabetical order, which would incorrectly sort "9" after "10". Length-based sorting is useful for identifying the shortest and longest entries in a list, finding outliers in data sets, and organizing content by complexity or detail level.
Alphabetical Sorting
Alphabetical sorting compares lines character by character using their Unicode code points. By default, the comparison is case-insensitive, meaning "apple" and "Apple" are treated as equivalent. When case-sensitive mode is enabled, uppercase letters sort before lowercase letters in standard Unicode order. This mode is useful when you need to maintain the distinction between differently capitalized entries, such as in programming identifier lists or case-sensitive file systems.
Numerical Sorting
Numerical sorting extracts the first number found at the beginning of each line and uses it as the sort key. This correctly handles decimal numbers, negative numbers, and numbers with leading zeros. Lines that do not start with a number are placed at the end of the sorted output. This sorting mode is ideal for numbered lists, CSV data with numeric first columns, log files with numeric prefixes, and any text where the meaningful ordering is based on a leading number.
Length-Based Sorting
Length sorting orders lines by the number of characters they contain. In ascending order, the shortest lines appear first. In descending order, the longest lines come first. This is useful for identifying the most detailed or verbose entries in a list, finding excessively long lines in code that may need refactoring, and organizing data by the amount of content each entry contains.
Privacy and Security
All sorting operations happen locally in your browser. Your text is never sent to any external server, making this tool safe for sorting confidential lists, proprietary data, personal information, and sensitive business documents. No data is stored beyond your current browser session.