Byte Conversion Calculator

Your details

Enter the file or drive size and pick its unit from the dropdown.
Binary matches Windows, macOS and Linux file managers. Decimal matches hard drive and SSD box labels.
Gigabytes
1GB
Megabytes1,024MB
Kilobytes1,048,576KB
Bytes1,073,741,824B
Bits8,589,934,592bit
Terabytes0.000976563TB
Petabytes0.000000953674PB
Megabits8,589.9346Mb
Gigabits8.589935Gb
GB1
MB1,024
TB0.000976563

1 GB = 1024.000 MB = 1,073,741,824 bytes (binary (base-1024)).

  • Result uses binary (base-1024) units, matching Windows, macOS and Linux file managers.
  • 1 byte = 8 bits; network speeds (Mbps, Gbps) are in bits, so divide by 8 to compare with file sizes in bytes.
  • A "1 TB" drive (decimal) holds 1,000,000,000,000 bytes, but your OS reports it as ~931 GB (binary), a 7.4% gap that widens with larger drives.

Next stepToggle decimal mode to compare the drive-maker figure against the OS figure.

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