What is the difference between MB and MiB?

1 MB (megabyte) = 1,000,000 bytes (SI decimal). 1 MiB (mebibyte) = 1,048,576 bytes (IEC binary). Hard drives use MB; operating systems typically report in MiB.

Why does my 1 TB hard drive show as 931 GB in Windows?

Hard drives are marketed using SI units (1 TB = 1,000,000,000,000 bytes). Windows reports storage in GiB (binary), so 1,000,000,000,000 ÷ 1,073,741,824 ≈ 931 GiB.

Can it convert network speeds (Mbps)?

The converter handles byte values. For Mbps (megabits per second), remember that 1 byte = 8 bits, so 100 Mbps = 12.5 MB/s.

Best Free Online Bytes Converter

File sizes, storage capacities, network speeds, and memory allocations are expressed in a variety of units — bytes, kilobytes, megabytes, gigabytes, and beyond — with two competing systems (SI decimal vs. IEC binary) that use the same prefixes with different meanings. A "gigabyte" can mean 1,000,000,000 bytes (as used by hard drive manufacturers) or 1,073,741,824 bytes (as used by operating systems). devtoolkit.sh's Bytes Converter clears up the confusion by showing conversions in all units simultaneously, with clearly labelled SI (KB, MB, GB) and binary (KiB, MiB, GiB) results. It handles values from bits up to exabytes and beyond. This is useful for interpreting storage specifications, understanding API rate limits and payload size restrictions, working with network bandwidth calculations, and translating between units reported by different tools. Developers frequently need this when configuring JVM heap sizes, container resource limits, S3 bucket policies with size restrictions, and database column size constraints — all of which use different unit conventions.

Value

Unit

Bytes

1073741824

1048576

1024

0.0009765625

9.536743e-7

FAQ

What is the difference between MB and MiB?: 1 MB (megabyte) = 1,000,000 bytes (SI decimal). 1 MiB (mebibyte) = 1,048,576 bytes (IEC binary). Hard drives use MB; operating systems typically report in MiB.
Why does my 1 TB hard drive show as 931 GB in Windows?: Hard drives are marketed using SI units (1 TB = 1,000,000,000,000 bytes). Windows reports storage in GiB (binary), so 1,000,000,000,000 ÷ 1,073,741,824 ≈ 931 GiB.
Can it convert network speeds (Mbps)?: The converter handles byte values. For Mbps (megabits per second), remember that 1 byte = 8 bits, so 100 Mbps = 12.5 MB/s.