What is the difference between MB and MiB?
MB (megabyte) is a SI decimal unit equal to 1,000,000 bytes and is used by hard-drive manufacturers, network equipment, and most operating-system marketers. MiB (mebibyte) is an IEC binary unit equal to 1,048,576 bytes and is what Windows, Linux, and macOS actually report for file and partition sizes. The 4.86% difference between them is why a 500 MB file may appear as 476.84 MiB in your file manager.
Why do hard drives always seem smaller than advertised?
Drive manufacturers measure capacity in SI decimal gigabytes (1 GB = 1,000,000,000 B), but operating systems display capacity in binary gibibytes (1 GiB = 1,073,741,824 B). A 1 TB drive contains exactly 1,000,000,000,000 bytes, which is only 931.32 GiB — about 6.87 GiB less than a round 1 TiB. The drive is not missing data; it is simply measured differently.
How do I convert Mbps to MB/s?
Divide megabits per second (Mbit/s or Mbps) by 8 to get megabytes per second (MB/s). For example, a 100 Mbit/s broadband connection can transfer a maximum of 12.5 MB/s. This is because there are 8 bits in one byte.
What is a petabyte and who uses it?
A petabyte (PB) equals 1,000 terabytes or 1,000,000,000,000,000 bytes. It is the scale at which hyperscale cloud providers, genomics research centres, and national digital libraries talk about total data holdings. For reference, all words ever spoken by humans are estimated at around 5 EB (exabytes), so a petabyte is still enormous by everyday standards.
When should I use bits instead of bytes?
Bits are the standard unit for data-transfer rates (network speeds, wireless throughput, USB bandwidth). Bytes are the standard unit for stored-data sizes (files, RAM, disk capacity). The rule of thumb: if it flows over a wire or through the air, it is measured in bits per second; if it sits on a device, it is measured in bytes.
How accurate is this byte converter?
Conversion factors follow IEC 80000-13 and the SI Brochure 9th edition. Results are computed in floating-point arithmetic and are accurate to at least 10 significant figures, which is more than sufficient for any practical storage or networking calculation.