Plain lines
Apple Banana Cherry
1. Apple 2. Banana 3. Cherry
Number Lines
Add sequential line numbers with a custom start value and separator—perfect for code snippets, legal clauses, and feedback lists.
Number Lines
Set format options or pick a preset — numbered output updates instantly.
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Input lines
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Output lines
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Highest number
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Characters added
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Empty lines skipped
Text to number
Lines with numbers
Paste lines to add sequential numbers with your chosen format.
Your text stays in your browser — nothing is uploaded.
Example
Roman numerals
Apple Banana Cherry
I Apple II Banana III Cherry
Leading zeros
Apple Banana
01 Apple 02 Banana
Reverse order
Apple Banana Cherry
3. Apple 2. Banana 1. Cherry
Numbering Modes Explained
Standard numbering
1. Apple 2. Banana
Parentheses
(1) Apple (2) Banana
Colon separator
1: Apple 2: Banana
Dash separator
1 - Apple 2 - Banana
Leading zeros
01 Apple 02 Banana
Reverse numbering
3 Apple 2 Banana 1 Cherry
Roman numerals
I Apple II Banana III Cherry
Alphabetic numbering
A Apple B Banana C Cherry
Common Uses
Markdown lists
Convert plain lines into ordered list drafts.
Jira tickets
Number reproduction steps for bug reports.
CSV exports
Add row indexes before spreadsheet imports.
Documentation
Label code samples and procedure steps.
SQL insert lists
Track value rows during query assembly.
Inventory lists
Number stock items for email approvals.
Email approvals
Reference line items in review threads.
Ordered instructions
Turn notes into step-by-step guides.
FAQ drafts
Sequence questions before publishing.
Study notes
Organize outline points for review.
Before and After Examples
| Mode | Before | After |
|---|---|---|
| Standard numbering | Apple | 1. Apple |
| Start at 10 | Apple | 10. Apple |
| Leading zeros | Apple | 01 Apple |
| Reverse numbering | Apple | 2. Apple |
| Roman numerals | Apple | I Apple |
| Alphabetic numbering | Apple | A Apple |
| Skip empty lines | Apple | 1. Apple |
| Prefix + number | Apple | Step 1. Apple |
| Suffix + number | Apple | (1) Apple |
| Number after text | Apple | Apple 1 |
Numbering Problems This Tool Solves
Meeting notes
Turn unordered action items into numbered follow-ups.
Bug reports
Sequence reproduction steps for support tickets.
Tutorial steps
Label instructions without manual typing.
Inventory exports
Add row IDs to plain-text stock lists.
FAQ articles
Order draft questions before publishing.
Documentation
Reference lines in specs and runbooks.
SQL rows
Track insert values during query building.
Large lists
Number hundreds of rows instantly in-browser.
Number Formats Explained
| Format | Example |
|---|---|
| Standard | 1. |
| Parentheses | (1) |
| Colon | 1: |
| Dash | 1 - |
| Bracket | [1] |
| Roman | I |
| Alphabetic | A |
| Lowercase | a |
| Leading zeros | 01 |
Special Numbering Systems
Roman numerals
I, II, III, IV
Alphabetic uppercase
A, B, C, D
Alphabetic lowercase
a, b, c, d
Leading zeros
001, 002, 003
Reverse numbering
10, 9, 8
Custom start number
Start from 0, 10, 100, or any value.
Popular Line Number Separators
| Separator | Example |
|---|---|
| Period | 1. Apple |
| Parentheses | (1) Apple |
| Colon | 1: Apple |
| Dash | 1 - Apple |
| Bracket | [1] Apple |
| Space | 1 Apple |
| Custom | 1) Apple |
Number Lines vs Other Formatting Tools
| Tool | What it does |
|---|---|
| Number Lines | Adds sequential numbers to existing rows. |
| Add Prefix and Suffix | Adds the same text before or after each row. |
| Repeat Text | Duplicates the same text multiple times. |
| Sort Lines | Reorders existing rows alphabetically or numerically. |
| Remove Empty Lines | Deletes blank rows before numbering. |
Popular Workflows
Large Examples
Markdown checklist
Before
Buy milk Walk dog Send report
After
1. Buy milk 2. Walk dog 3. Send report
Inventory lists
Before
Widget A Widget B Widget C
After
01 Widget A 02 Widget B 03 Widget C
FAQ drafts
Before
What is this? How does it work? Is it free?
After
1. What is this? 2. How does it work? 3. Is it free?
CSV rows
Before
apple banana cherry
After
1: apple 2: banana 3: cherry
Jira tasks
Before
Open app Click login Enter credentials
After
(1) Open app (2) Click login (3) Enter credentials
Ordered instructions
Before
Preheat oven Mix ingredients Bake 30 minutes
After
Step 1 - Preheat oven Step 2 - Mix ingredients Step 3 - Bake 30 minutes
Documentation examples
Before
Install package Import module Call function
After
I Install package II Import module III Call function
Why Use Number Lines?
Documentation
Reference steps in specs, README files, and runbooks.
Tutorials
Turn rough notes into ordered lesson steps.
Email approvals
Let reviewers cite specific line items by number.
Inventory exports
Add row IDs before sharing plain-text stock lists.
Meeting notes
Sequence action items for follow-up tracking.
Programming examples
Label code listing lines for blog posts and docs.
Frequently Asked Questions
Can numbering start at any value?
Yes. Enter any start number — for example 10 for section 10 onward.
Can I use Roman numerals?
Yes. Select Roman number style or use the Roman preset for labels like I, II, III.
Can I use letters instead of numbers?
Yes. Choose Alphabetic or Lowercase style for A, B, C or a, b, c labels.
Can I reverse numbering?
Yes. Enable reverse numbering to count down from the highest value.
Can I add leading zeros?
Yes. Enable leading zeros to pad numbers — for example 01, 02, 03.
Can I start numbering from 0?
Yes. Set the start value to 0 for zero-based lists.
Can empty lines be skipped?
Yes. Enable skip empty lines to pass blank rows through without numbers.
Can I renumber existing lists?
Yes. Enable renumber existing lines to strip old prefixes and apply fresh numbering.
Can I add prefixes?
Yes. Use prefix before number — for example Step to produce Step 1. Apple.
Can I add suffixes?
Yes. Use suffix after number — for example ) with prefix ( for (1) Apple.
Will order change?
No. Line order stays the same — only numbering prefixes are added or updated.
Can very large lists be handled?
Yes. The tool processes lists locally in your browser, including thousands of rows.
Is my text uploaded?
No. All numbering runs locally in your browser — your text never leaves your device.
Can I download the result?
Yes. Click Download .txt to save the numbered output as a text file.
Can I copy the output?
Yes. Use Copy Output for the numbered text or Copy Stats for a summary of line counts.