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Decimal and binaryMB ≠ MiBLive conversion

Data Converter

Convert bytes, kilobytes, megabytes and gigabytes in real time, choosing between the decimal and binary standards.

What it is

Digital Storage Converter turns bits, bytes, KB/MB/GB/TB (decimal) and KiB/MiB/GiB/TiB (binary) into each other as you type. 500 decimal MB (base 1000) equal about 476.84 binary MiB (base 1024): the gap grows with the unit, and it's why the free space on a drive always looks smaller than the number printed on the box. An explicit toggle lets you choose decimal mode (SI, used by hardware makers) or binary mode (IEC, used by many operating systems), a distinction most competitor converters handle poorly.

  • From bits to TiB: decimal units (KB, MB, GB, TB) and binary units (KiB, MiB, GiB, TiB) in one tool
  • 500 decimal MB ≈ 476.84 binary MiB: the gap between the two bases made explicit, not hidden
  • Decimal (base 1000, SI) / binary (base 1024, IEC) toggle always shown as text, not just a color

How it works

#1
Pick the mode
Choose decimal (KB, MB, GB, TB — base 1000) or binary (KiB, MiB, GiB, TiB — base 1024).
#2
Type the value
Enter the number to convert: the result in the other unit appears instantly, within the mode you picked.
#3
Check the common table
Below the result you'll find standard multiples already converted, useful for comparing typical file sizes.

Features

Explicit decimal/binary toggle
Switch between base 1000 (SI: KB, MB, GB) and base 1024 (IEC: KiB, MiB, GiB) with a control always shown as text, not just a color: a distinction most generic converters handle poorly.
MB ≠ MiB, the gap calculated
1 decimal MB (1,000,000 bytes) and 1 binary MiB (1,048,576 bytes) differ by about 4.86% — the same reason a manufacturer's 1 TB drive shows up as roughly 931 GiB in the operating system.
Common conversions table
Standard multiples (1, 10, 100, 500 MB...) already calculated below the result, for quick comparisons between file sizes.
Part of the universal converter
The same tool as the other 11 families: jump to time, speed and other conversions from the /unit-converter hub.

FAQ

The decimal megabyte (MB) uses base 1000: 1 MB = 1,000,000 bytes. The binary mebibyte (MiB) uses base 1024: 1 MiB = 1,048,576 bytes. They're different units, even though both often get labeled "MB" in everyday use.
Drive makers state capacity in decimal units (1 TB = 1,000,000,000,000 bytes), while many operating systems display it in binary units mislabeled "GB" instead of "GiB": a drive sold as 1 TB shows up as roughly 931 GiB in the system.
About 476.84 MiB (500,000,000 bytes ÷ 1,048,576).
1 byte equals 8 bits: the factor used to convert between the two smallest units.
Decimal (KB, MB, GB) if you're reading a hardware spec or a data bill; binary (KiB, MiB, GiB) if you're reading the storage shown by your operating system: this tool's toggle lets you switch between the two without doing the math by hand.