Line Counter
Text ToolsCount lines in text with separate totals for blank lines, non-blank lines, words, characters, and paragraphs for detailed statistics.. Free, private — all processing in your browser.
Paste text and this counts the lines as you type — total lines, non-empty lines, blank lines, and unique lines — plus the length of your longest line and the average line length. No button to press; the numbers update live.
The distinction between total and non-empty lines is the useful part. "How many lines is this file?" and "how many lines actually have content?" are different questions, and this answers both at once. The unique-line count tells you how much repetition is in there, and the longest-line figure is handy for spotting a runaway line that blows past your editor's wrap column or a linter's max-length rule.
It's a quick, no-fuss counter for logs, lists, code snippets, or any block of text where you need the line stats without opening an editor or running wc.
Line Counter — key features
Multiple counts at once
Lines, blank lines, non-blank lines, paragraphs, words, characters — all shown simultaneously.
Unicode-correct character count
Uses grapheme clusters, so emoji and combined characters count as one each, not as multiple code units.
With and without whitespace
Character counts in both modes so you can pick the number that matches your form or tool.
Paragraph detection
Counts paragraphs as double-newline-separated blocks, matching how documents usually structure content.
Line ending agnostic
Handles Unix, Windows, Mac, and Unicode line separators correctly.
Live updates
Counts update as you type or paste, so you see the impact of each edit immediately.
Client-side only
No text leaves the browser — works on confidential documents without privacy concern.
Copy any stat
One-click copy for each count (total lines, words, characters) to paste into reports or code reviews.
How to use the Line Counter
- 1
Paste your text
Drop text into the input field. The counts update automatically.
- 2
Read the stats
Every relevant count appears in the stats panel — total lines, blank lines, non-blank, paragraphs, words, characters with and without spaces.
- 3
Pick the number you need
For code reviews, non-blank lines. For document length, word count. For character-limited forms, characters without spaces. Pick the one that matches.
- 4
Copy any stat
One-click copy for any individual number to paste into an email, ticket, or document.
- 5
Adjust options
Tweak whitespace-only-as-blank, word-boundary rules, or paragraph separator if the defaults do not fit your content.
Common use cases for the Line Counter
Development
- →Code review metrics: Count lines of code added in a pull request to evaluate review size before committing time to it.
- →Log file sizing: Quickly count lines in a log file to plan processing time or decide on retention policies.
- →File comparison: Compare line counts across two files to spot unexpected differences before diffing.
Writing
- →Article length check: Verify a submission meets a word-count requirement before sending to the editor.
- →Character-limited posts: Count characters for Twitter-style platforms with strict limits.
- →Long-form writing progress: Track word count as you work on a novel, chapter, or thesis.
Data
- →CSV row count: Verify the number of data rows in a CSV matches expected before importing into a database.
- →List size estimation: Count the number of entries in an email list, URL list, or ID list before processing.
- →Export audit: Confirm an export produced the expected number of lines before trusting its completeness.
Worked examples
Simple text
Basic line and word count.
Hello world This is line two Line three
lines: 3 words: 9 characters: 39 (with spaces), 34 (without)
With blank lines
Showing blank vs non-blank count.
first paragraph second paragraph third
total lines: 6 blank: 3 non-blank: 3 paragraphs: 3
Character count with emoji
Grapheme clusters counted as one.
Hello 👋🌍
grapheme clusters: 8 UTF-16 code units: 11 (emoji are 2 code units each)
CSV
Counting data rows.
id,name,email 1,Ana,a@example.com 2,Ben,b@example.com 3,Cara,c@example.com
total lines: 4 excluding header: 3 words: 12
Log file
Quick count of log entries.
2024-05-05 INFO Server started 2024-05-05 ERROR Connection refused 2024-05-05 INFO Reconnecting
lines: 3 each entry is one line (for programs that output multi-line messages, actual event count may differ)
Technical details
Lines are split on the newline character, so the total is simply the number of newline-separated segments. A blank line is one that's empty or contains only whitespace (checked by trimming). Non-empty is the total minus blanks. Unique counts distinct non-blank lines using a set, so two identical lines count once. Longest line is measured in characters, and average length is the mean character count across non-empty lines, rounded to a whole number.
One thing to note about how text areas handle newlines: a file with a trailing newline will register one more "line" segment than you might expect, because the split produces a final empty element. That empty element is counted in the blank-line tally. Everything is computed in your browser as you type — nothing is uploaded.
Pitfalls and fixes
⚠A trailing newline adds a blank line
If your text ends with a newline, the split produces a final empty segment that's counted as a blank line. That's why the total can be one higher than the number of visible lines.
⚠Blank means whitespace-only, not just empty
A line with only spaces or tabs counts as blank, because the check trims first. If you need to treat whitespace lines as content, this tool won't distinguish them.
⚠Unique ignores blank lines
The unique-line count only considers non-blank lines. Multiple empty lines don't inflate the unique total.
⚠Line endings are normalized by the browser
Pasting Windows (CRLF) text into the box may have its line endings handled by the textarea. The count reflects what the browser stores, which may differ slightly from the raw byte-level line endings of the original file.
⚠Length is characters, not bytes
Longest and average length count characters (code units). Multi-byte characters like emoji may count differently than their byte size, so this isn't a byte measurement.
Line Counter — comparisons and alternatives
On the command line, wc -l gives you a line count and little else. This adds the breakdown — blank vs. non-empty, unique lines, longest and average length — in a live view, which is faster than piping through several commands when you just want to eyeball a block of text.
For counting words and characters rather than lines, use a word counter instead; for removing duplicate lines rather than just counting them, a dedicated dedupe tool does that. This one focuses on line-level statistics.
Frequently asked questions about the Line Counter
▶What's the difference between total lines and non-empty lines?
Total lines counts every newline-separated segment, including blank ones. Non-empty lines counts only those with actual content (after trimming whitespace). Blank lines is the difference between them.
▶Why does my count seem one too high?
A trailing newline at the end of the text creates a final empty segment, which is counted as a blank line. This is normal behavior when splitting on newlines.
▶What counts as a unique line?
A distinct non-blank line. Two identical lines are counted once in the unique tally. It's a quick way to gauge how much repetition your text contains.
▶Is my text sent to a server?
No. All counting happens in your browser as you type. Nothing you paste is uploaded or stored.
▶Can it count words or characters too?
This tool focuses on line statistics. For word and character counts, use a word counter; for removing duplicate lines, use a remove-duplicate-lines tool.
Useful references
- GNU wc manual — Unix wc command, the canonical reference for line, word, and character counting.
- Unicode Segmentation — Reference for word and sentence boundary definitions used in counting operations.
- MDN String.prototype.length — JavaScript string length semantics, explaining why character counts can differ.
- cloc — count lines of code — Dedicated LOC counter that parses programming languages, useful for code-specific counts.
- Intl.Segmenter — Browser API for grapheme-aware text segmentation, used for Unicode-correct character counts.
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