Smart Utilities

Storage Capacity Converter

Convert bytes, KB, MB, GB, TB, KiB, MiB, GiB, TiB, sectors, and human-readable drive sizes. Explain why a 1 TB drive appears as about 931 GiB.

Convert Storage Units

Enter a value, choose the source and target units, then generate a full conversion table and explanation.

1. Capacity conversion

Amount

From unit

To unit

Decimal places

Quick examples

Decimal units use powers of 1000. Binary units use powers of 1024.

2. Optional drive display checker

Simple conversionConvert exactly between the selected units. Drive label vs computer displayEstimate how advertised drive capacity appears in binary units.

Ready to convert

Conversion result will appear here

Enter a storage amount to convert between decimal units, binary units, bytes, and sectors.

Main result —

Bytes —

Decimal display —

Binary display —

512-byte sectors —

What this means

Your unit explanation will appear here.

Unit	Converted value	System
Run a conversion to generate the table.

Note: Drive makers usually advertise decimal GB/TB. Operating systems may display binary GiB/TiB or label binary values as GB/TB.

GB vs GiB

GB is decimal: 1 GB = 1,000,000,000 bytes. GiB is binary: 1 GiB = 1,073,741,824 bytes.

Sector conversion

Convert 512-byte and 4096-byte sector counts into human-readable storage sizes for disk analysis.

No API required

This is a single static HTML file with local JavaScript calculations. No backend or upload is needed.