Hard Drive Capacity Verification
Explain the discrepancy between a manufacturer's 1 TB drive and Windows' 931 GB display.
Convert bytes, KB, MB, GB, TB, and PB with binary (1024) vs decimal (1000) toggles and drive-size insights.
Convert digital storage capacities between Bytes, Kilobytes (KB), Megabytes (MB), Gigabytes (GB), Terabytes (TB), and Petabytes (PB). Easily switch between binary base 1024 (Windows, RAM, operating systems) and decimal base 1000 (hard drive manufacturers, macOS, network speeds).
Convert digital storage capacities between Bytes, Kilobytes (KB), Megabytes (MB), Gigabytes (GB), Terabytes (TB), and Petabytes (PB). Easily switch between binary base 1024 (Windows, RAM, operating systems) and decimal base 1000 (hard drive manufacturers, macOS, network speeds).
Enter any numeric value or choose a hardware preset (e.g. 512 GB SSD, 1 TB HDD).
Choose Binary (1024) for Windows/RAM or Decimal (1000) for hard drive packaging specs.
Select your input and output units from Bytes up to Petabytes.
Inspect the instant breakdown table showing identical capacity across every digital storage tier.
Explain the discrepancy between a manufacturer's 1 TB drive and Windows' 931 GB display.
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Hard drive manufacturers market storage in Decimal SI units (1 TB = 1,000,000,000,000 bytes). Microsoft Windows measures storage in Binary units (Gibibytes / 1024^3). Dividing 1,000,000,000,000 by 1024^3 yields approximately 931.32 GB.
Decimal (SI) units scale by factors of 1,000 (1 KB = 1,000 Bytes), which is the standard used by macOS, drive manufacturers, and telecommunications. Binary (IEC) scales by 1,024 (1 KiB = 1,024 Bytes), which is how computer RAM and the Windows OS measure file sizes.
Under the binary system (used by Windows and RAM), 1 GB = 1,024 MB. Under the decimal metric system (used by drive packaging and network bandwidth), 1 GB = 1,000 MB.
Yes. FameOrbit's engine calculates up to Petabytes (10^15 / 2^50) with 64-bit IEEE floating point accuracy.
convert digital storage units. quickly converts common file and storage sizes
Convert bytes, kilobytes, megabytes, gigabytes and terabytes using binary 1024-based units.
Enter a value.
Choose the source unit.
Choose the target unit.
Review the converted value.
Convert 1 GB to MB.
This tool uses binary 1024-based units.
Manufacturers commonly use decimal units while some operating systems report binary-based values.