Adds thousands separators to a number.
The Number Formatter adds thousands separators to a plain number so large values are easier to read. Type a number and choose whether to group the integer digits with a comma, space, dot, or no separator at all. It's handy when you need a quick, readable representation of figures while writing docs, configs, or test fixtures.
No. The Number Formatter runs entirely in your browser and nothing you type is uploaded or stored remotely. All formatting happens client-side.
You can group the integer digits with a comma, a space, a dot, or select None to apply no separator. The comma is used by default.
Yes. Only the integer part is grouped, while the fractional part after the decimal point is left unchanged, and a leading minus sign is preserved.
The input must be a valid number (optional minus sign, digits, and an optional decimal part). Anything else, such as letters or existing separators, produces an 'Input is not a valid number' error.
No. The decimal point is always a dot in the output, even if you pick the dot as the thousands separator, so the integer and fractional parts stay clearly distinguished.