File size formatter

Convert raw bytes or common file-size labels into clean decimal or binary units for notes, tickets, and docs.

Formatter controls

Supports bytes, KB, MB, GB, TB, KiB, MiB, GiB, and TiB.

Sample file size loaded.

Decimal vs binary

Decimal units use 1,000 steps. Binary units use 1,024 steps and show labels like KiB and MiB.

Clear validation

Unknown units and negative values are rejected so the result is not silently misleading.

Local formatting

The calculation runs in your browser and does not upload filenames, sizes, or notes.