Does it remove the space after each comma?

Yes, if a comma is immediately followed by a single space, that space is consumed along with the comma, so 'a, b, c' becomes three clean lines instead of lines with a leading space.

What happens to commas inside quoted values?

The tool doesn't parse CSV quoting rules; it replaces every comma character regardless of context, so a comma inside a quoted field would also be converted.

What happens when there are two spaces after a comma?

Only one is consumed. The pattern matches a comma plus at most one following space, so any extra spaces survive as leading whitespace on the new line. Run the result through a whitespace trimmer if that matters for your output.

Comma to Newline Converter - One Item Per Line Online

Overview

Introduction

A comma-separated list is compact to type but awkward to scan or paste into tools that expect one value per line.

Manually replacing every comma with a line break gets tedious fast on anything longer than a handful of items.

What Is Comma to Newline Converter?

A converter that replaces every comma in your text, and an immediately following space if present, with a newline character.

It runs entirely client-side as part of this site's String Tools collection, so nothing you paste is ever uploaded to a server.

How Comma to Newline Converter Works

The tool runs a single regex replace over the input, matching each comma plus an optional following space and substituting a newline in its place.

The transformation happens synchronously in JavaScript the moment you type, with no network round trip involved.

When To Use Comma to Newline Converter

Use it when you have a comma-separated list, like tags, emails, or keywords, and need each value on its own line for another tool or form field.

It's a fast way to reformat a list without opening a spreadsheet or writing a script.

Often used alongside Newline to Comma Converter, Column to Comma Converter and Comma to Column Converter.

Features

Advantages

Handles the common 'comma, space' separator pattern cleanly, without leaving a stray leading space on each line.
Simple, predictable, single-pass transformation.
Absorbs the space after each comma as part of the match, so the resulting lines do not start with stray leading whitespace.

Limitations

It doesn't understand CSV quoting, so a comma inside a quoted field is converted just like any other comma.
Only a single space following a comma is absorbed, so wider or irregular spacing leaves leading whitespace on the resulting lines.

Examples

Splitting a tag list onto separate lines

Input

red, green, blue

Output

red
green
blue

Each comma-space pair is replaced with a newline, leaving three clean lines.

Best Practices & Notes

Best Practices

For genuine CSV data with quoted fields containing commas, use a dedicated CSV parser instead of this simple text-replace tool.
Trim the result when the source used inconsistent spacing after its commas, because only one following space is removed per comma.
Scan for commas inside individual values before converting, since each one becomes a line break and quietly splits that value in two.

Developer Notes

The regex `/, ?/g` matches a comma followed by zero or one literal space and replaces each match with `\n`, which is why 'a,b' and 'a, b' both produce the same clean line break behavior.

Comma to Newline Converter Use Cases

Converting a comma-separated tag or keyword list to one-per-line for a form field
Reformatting a comma-separated email list for a bulk-import tool that expects one address per line
Preparing a comma-separated list for a line-based diff or search tool

Common Mistakes

Using this on quoted CSV data expecting commas inside quotes to be preserved; they aren't, since the tool doesn't parse quoting.
Expecting a tab or several spaces after a comma to be absorbed; only one literal space is part of the pattern.

Tips

Pair this with the Comma to Column Converter if you also need surrounding whitespace trimmed from each resulting value.
Use the Comma to Column Converter instead when you also want each value trimmed and empty entries dropped rather than just line-broken.

Comma to Newline Converter