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🧮 Comma Separator Tool

Add or remove commas from numbers, convert lists to comma-separated values, and clean CSV-style data instantly.

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Quick Actions
Tips
Use Add commas mode to format plain numbers like 1000 → 1,000 or 2500000 → 2,500,000.
Use Lines → comma‑separated to convert a vertical list into a single CSV line.
Use Custom separator to split on semicolons or pipes and rejoin with commas or any other delimiter.

About Comma Separation

Number Formatting

Many regions use commas as thousand separators (1,000,000) while others use spaces or periods. This tool formats plain digits into comma‑grouped numbers without changing decimals.

Lists & CSV

Comma‑separated values (CSV) are widely used for spreadsheets and data imports. Converting between one-item-per-line lists and CSV lines helps when cleaning or preparing data.

Custom Delimiters

Log files and exports often use semicolons, pipes, or tabs as separators. A flexible split‑and‑join workflow lets you normalise any delimiter to commas or vice versa.