Storage Unit Converter

Convert between storage units with binary (1024) and decimal (1000) modes

Enter a value to see all unit conversions

Conversion Mode

Decimal (1000)Binary (1024)

Value

Unit

Total Bytes

1,073,741,824

Binary vs Decimal: 1 GB in binary is 7.4% larger than in decimal. This difference compounds with larger units.

Click to load typical file sizes for conversion

Binary (Base 1024)

• Used by operating systems

• 1 KB = 1,024 bytes

• 1 MB = 1,048,576 bytes

• More accurate for memory

Decimal (Base 1000)

• Used by storage vendors

• 1 KB = 1,000 bytes

• 1 MB = 1,000,000 bytes

• Makes drives look larger

Difference at Scale

• 1 TB (decimal) = 931 GB (binary)

• ~7% difference at TB scale

• ~10% difference at PB scale

8 bits

1 byte

1024 bytes

1 KB

1024 KB

1 MB

1024 MB

1 GB

1024 GB

1 TB

1024 TB

1 PB

Pro tip: When buying storage, remember that advertised capacity uses decimal units. A "1TB" drive provides ~931GB in your OS.