Question
What units (KB, MB, GB...) does this support?
What units (KB, MB, GB...) does this support?
About sindresorhus/pretty-bytes · 2 messages · last activity 5/18/2026
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The library supports multiple unit systems depending on the options used:
Standard Byte Units (default): B, kB, MB, GB, TB, PB, EB, ZB, YB [index.js:L1-L9]
Binary Byte Units (when binary: true):
B, KiB, MiB, GiB, TiB, PiB, EiB, ZiB, YiB
[index.js:L11-L19]
Bit Units (when bits: true):
b, kbit, Mbit, Gbit, Tbit, Pbit, Ebit, Zbit, Ybit
[index.js:L21-L29]
Binary Bit Units (when both bits: true and binary: true):
b, kibit, Mibit, Gibit, Tibit, Pibit, Eibit, Zibit, Yibit
[index.js:L31-L39]
The selection of which unit system to use is determined in the main function [index.js:L140-L143], where it picks the appropriate array based on the bits and binary options.
FOLLOW_UPS:
- What's the difference between binary and non-binary formatting?
- How does the library choose which unit to display?
- Can I customize the units displayed?
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