Thousands separator
Add, change or remove thousands separators in every number in your text.
Thousands separator
Paste any text — a report, a spreadsheet export, a plain list of figures — and this tool finds the numbers in it and formats them with thousands separators: 1234567.89 becomes 1,234,567.89. It works just as well on numbers buried in sentences as on bare lists, and it never touches the words around them.
Pick the separator your style guide asks for: comma, period, regular space or thin space — the narrow typographic space many European publications use. The decimal part of each number is detected automatically and preserved, so 1234.5 becomes 1,234.5 instead of being mangled. When the separator you choose collides with the decimal sign, the decimal flips to the other convention, which means the tool converts between regional styles in one pass: 1.234.567,89 with the comma separator selected comes out as 1,234,567.89, and the reverse works with the period.
Switch the mode to remove separators and grouping is stripped instead, turning 1,234,567.89 back into 1234567.89 — useful before importing figures into a spreadsheet, a database or code that expects raw numbers. Anything ambiguous is left alone rather than guessed at: version numbers like 1.2.3, dates, phone numbers, codes with leading zeros and digits glued to letters all pass through unchanged.
Everything runs locally in your browser, so financial figures and internal reports never leave your device. The tally under the output shows how many numbers were found and how many were changed, and the result is one click away from being copied or downloaded as a .txt file.