byte-size

An isomorphic, load-anywhere function to convert a bytes value into a more human-readable format. Choose between metric or IEC units, summarised below.

Value	Metric
1000	kB kilobyte
1000^2	MB megabyte
1000^3	GB gigabyte
1000^4	TB terabyte
1000^5	PB petabyte
1000^6	EB exabyte
1000^7	ZB zettabyte
1000^8	YB yottabyte

Value	IEC
1024	KiB kibibyte
1024^2	MiB mebibyte
1024^3	GiB gibibyte
1024^4	TiB tebibyte
1024^5	PiB pebibyte
1024^6	EiB exbibyte
1024^7	ZiB zebibyte
1024^8	YiB yobibyte

Value	Metric (octet)
1000	ko kilooctet
1000^2	Mo megaoctet
1000^3	Go gigaoctet
1000^4	To teraoctet
1000^5	Po petaoctet
1000^6	Eo exaoctet
1000^7	Zo zettaoctet
1000^8	Yo yottaoctet

Value	IEC (octet)
1024	Kio kilooctet
1024^2	Mio mebioctet
1024^3	Gio gibioctet
1024^4	Tio tebioctet
1024^5	Pio pebioctet
1024^6	Eio exbioctet
1024^7	Zio zebioctet
1024^8	Yio yobioctet

Example

const byteSize = require('byte-size')

byteSize(bytes, [options]) ⇒ Object ⏏

Kind: Exported function

Param	Type	Default	Description
bytes	number		the bytes value to convert.
[options]	object		optional config.
[options.precision]	number	1	number of decimal places.
[options.units]	string	"metric"	select 'metric', 'iec', 'metric_octet' or 'iec_octet' units.

Example

> const byteSize = require('byte-size')

> byteSize(1580)
{ value: '1.6', unit: 'kB' }

> byteSize(1580, { units: 'iec' })
{ value: '1.5', unit: 'KiB' }

> byteSize(1580, { units: 'iec', precision: 3 })
{ value: '1.543', unit: 'KiB' }

> byteSize(1580, { units: 'iec', precision: 0 })
{ value: '2', unit: 'KiB' }

> byteSize(1580, { units: 'metric_octet' })
{ value: '1.6', unit: 'ko' }

> byteSize(1580, { units: 'iec_octet' })
{ value: '1.5', unit: 'Kio' }

> byteSize(1580, { units: 'iec_octet' }).toString()
'1.5 Kio'

> const { value, unit }  = byteSize(1580, { units: 'iec_octet' })
> `${value} ${unit}`
'1.5 Kio'

Load anywhere

This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.

Node.js:

const byteSize = require('byte-size')

Within Node.js with ECMAScript Module support enabled:

import byteSize from 'byte-size'

Within a modern browser ECMAScript Module:

import byteSize from './node_modules/byte-size/index.mjs'

Old browser (adds window.byteSize):

<script nomodule src="./node_modules/byte-size/dist/index.js"></script>

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© 2014-18 Lloyd Brookes <[email protected]>. Documented by jsdoc-to-markdown.