numfmt

Convert numbers to and from human-readable strings. More information: https://www.gnu.org/software/coreutils/numfmt.

• Convert 1.5K (SI Units) to 1500:
  numfmt --from={{si}} {{1.5K}}
• Convert 5th field (1-indexed) to IEC Units without converting header:
  ls -l | numfmt --header={{1}} --field={{5}} --to={{iec}}
• Convert to IEC units, pad with 5 characters, left aligned:
  du -s * | numfmt --to={{iec}} --format="{{%-5f}}"