Add Commas to Numbers Converter

Add comma separators to numbers instantly using our free online tool (1000 ↔ 1,000).

Enter a number to add comma seperators:

What are comma separators?

Comma separators insert commas into numbers so they are easier to read (for example: 1,234,567 instead of 1234567). Long numbers can look especially confusing without using number separators, as the long string of numbers tend to blend together visually. With our tool you can add separators to numbers instantly. Separators usually appear after every set of 3 digits, except for at the start of the number. Add comma separators with the free tool above.

Add Comma Separators Add Number Thousand Separators

Are comma separators the same as thousand separators?

Yes — comma separators are commonly called thousand separators in number formatting. Different countries and languages may use other symbols (dots or spaces) to format large numbers, but “comma separators” and “thousand separators” are often interchangeable terms.

What is the use of adding comma separators to numbers?

  • Improves readability for large numbers (1,000 vs 1000).
  • Reduces mistakes when reading or typing figures.
  • Saves time for readers who may otherwise have to count digits.

Who might need to use thousand separators?

Anyone working with large numbers may need to insert separators! This includes accountants, analysts, students, developers and content writers amongst many others. This tool can help any of these professionals or hobbyists add commas to numbers easily. You don’t have to know how to format thousand separators – our converter does it automatically.

How to insert commas using the separator tool

Format your number correctly in three easy steps.

  • Paste or type your number into the input box.
  • The formatted number with separators will automatically appear in the output box.
  • Click the copy button or use the clear button to restart.

Features of the number separator converter

Instant formatting as you type – no waiting required.

Copy result with a single click. Works in all modern browsers without sign-up.

Full support for decimals and negative numbers.

Completely free to use

You can insert number separators without any fees. No account required — format numbers with thousand separators as many times as you like.

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Ready to get started?

Add comma separators to numbers quickly using the button below.