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Millify

Converts long numbers into pretty, human-readable strings.

Before 😒 After 🎉
2000 '2K'
10000 '10k'
42500 '42.5 kg'
1250000 '1.25 MB'
2700000000 '2.7 bil'

Install

Get it on npm:

npm install millify

Usage

Command line

$ millify 12345
12.3K

See millify --help for options.

Programmatically

millify(value: number, options: MillifyOptions)

import millify from "millify";

// For CommonJS: `const { millify } = require("millify");`

millify(2500); // 2.5K

millify(1024000, {
  precision: 3,
  lowercase: true
});
// 1.024m

millify(39500, {
  precision: 2,  
  decimalSeparator: ","
});
// 3,95K

millify(1440000, {
  units: ["B", "KB", "MB", "GB", "TB"],
  space: true,
});
// 1.44 MB

Options

Name Type Default Description
precision number 1 Number of decimal places to use
decimalSeparator string '.' Desired decimal separator (e.g. decimal point or comma)
lowercase boolean false Use lowercase abbreviations
space boolean false Add a space between number and abbreviation
units Array<string> ['', 'K', 'M', 'B', 'T', 'P', 'E'] Unit abbreviations