Add Commas to Numbers

Enter text with numbers

Thousands separator: Format only whole numbers (skip decimals) Replace numbers inline (otherwise output formatted numbers list)

Result

About Add Commas to Numbers

This tool automatically formats large numbers by inserting thousands separators (commas, dots, or spaces). It detects integers and decimal numbers inside your text and outputs clean, human-readable numbers for reports, CSVs, invoices, or content publishing.

Example

Input:
The population is 12345678 and the revenue was 9876543.21 last year.

Options: Thousands separator = comma, Replace inline = checked
Output:
The population is 12,345,678 and the revenue was 9,876,543.21 last year.

How to use it

Step 1: Paste text with numbers into the input box.
Step 2: Choose a thousands separator (comma, dot, or space).
Step 3: Optionally enable “Format only whole numbers” or toggle “Replace numbers inline”.
Step 4: Click Add Commas / Format Numbers and copy the result.

Who needs this?

This is useful for accountants, copywriters, data entry specialists, financial analysts, and anyone preparing numbers for display, CSV export, or content where readability matters. For further cleanup, combine with Add Commas to Numbers (this tool) or use Remove Extra Spaces.

Why use this tool?

Large, unformatted numbers are hard to read and prone to misinterpretation. This tool ensures consistent formatting across documents and saves time compared to manual editing.