MiB/s to MB/s
1 mebibyte per second equals 1.048576 megabytes per second exactly.
How to convert mebibytes per second to megabytes per second
To convert mebibytes per second to megabytes per second, multiply the number of mebibytes per second by 1.048576. This factor is exact. To go the other way, multiply megabytes per second by 0.9536743164 (rounded).
megabytes per second = mebibytes per second × 1.048576
Example: 10 mebibytes per second = 10.48576 megabytes per second.
Network speeds are quoted in bits per second (lowercase b), while file sizes use bytes (uppercase B). Divide Mbps by 8 for MB/s.
About these units
Mebibyte Per Second (MiB/s)
1,048,576 bytes per second (8.39 Mbps). Used by some operating systems and storage tools.
Mebibyte is one of the newest words in computing. In December 1998 the IEC approved names for binary multiples, published in 1999 as an amendment to IEC 60027-2. Each keeps the first two letters of its SI counterpart and adds bi for binary, so mebi stands for 2²⁰. The aim was to stop mega meaning 10⁶ in telecommunications and storage but 2²⁰ in memory, a split that left room for incompatibility.
A mebibyte per second is 1,048,576 bytes per second, about 8.39 Mbit/s, so it is roughly 4.9 percent larger than 1 MB/s. Some operating systems and tools divide by 1,024 and then print the result with a plain MB label, so one program may show 11.9 for a transfer that another shows as 12.5. For example, a 100 Mbit/s link carries about 11.92 MiB/s at most. The IEEE chose to keep SI meanings in its own standards, allowing base-two use of mega only when explicitly noted.
1 mebibyte per second = 8,388,608 bits per second (exactly).
Sources: NIST: Prefixes for binary multiples; Wikipedia: Data-rate units; Wikipedia: Megabyte
Megabyte Per Second (MB/s)
1,000,000 bytes per second (8 Mbps). Disk and download speeds are shown in MB/s.
Megabytes per second inherit all the confusion of the megabyte itself. The word has meant 1,000,000 bytes in networking, hard drives and DVDs, 1,048,576 bytes for memory under Microsoft Windows, and 1,024,000 bytes for the 3.5-inch floppy disk marketed as 1.44 MB, which actually held 1,474,560 bytes. In 1999 the IEC defined megabyte as 10⁶ bytes and mebibyte as 2²⁰ bytes, and by the end of 2009 the IEEE, EU, ISO and NIST had adopted that standard.
As a rate, 1 MB/s is 1,000,000 bytes per second, or 8 Mbit/s. File copies, game installers and disk benchmarks usually show MB/s, while internet plans use Mbit/s, so a 100 Mbit/s plan tops out near 12.5 MB/s. As a feel for size, about one minute of 128 kbit/s MP3 audio fits in roughly 1 MB, so a link carrying 1 MB/s moves about a minute of such audio every second.
1 megabyte per second = 8,000,000 bits per second (exactly).
Sources: Wikipedia: Megabyte; NIST: Prefixes for binary multiples; Wikipedia: Data-rate units
Related conversions
- MB/s to MiB/s (reverse)
- MiB/s to bps
- MiB/s to Kbps
- MiB/s to Mbps
- MiB/s to Gbps
- MiB/s to Tbps
- MiB/s to B/s
- MiB/s to KB/s
- MiB/s to GB/s
- Bps to MB/s
- Kbps to MB/s
- Mbps to MB/s
- Gbps to MB/s
- Tbps to MB/s
- B/s to MB/s
- KB/s to MB/s
- GB/s to MB/s
- Kibit/s to MB/s
- Mibit/s to MB/s
- Gibit/s to MB/s
- KiB/s to MB/s
See all data transfer rate units.