To convert kibibytes per second to mebibytes per second, multiply by 0.0009765625. That factor is the whole relationship: both units measure how much data moves per second, so the conversion is a proportion with no offset and no substance-specific constant.
A mebibyte is 1,048,576 bytes, about 4.9% more than a megabyte. The gap is why a "100 MB/s" drive benchmarks at roughly 95 MiB/s. A kibibyte is exactly 1,024 bytes. Linux tools and torrent clients often report KiB/s while marketing uses kB/s, a 2.4% difference.
Bits and bytes. Network speeds are sold in bits per second and file transfers are reported in bytes per second, and there are eight bits to a byte, so a 100 Mbps line downloads at about 12 MB/s. A connection is not underperforming by a factor of eight; it is being measured in different units. Below the calculator there is a step table for the values people look up most, and a second table putting real how much data moves per second figures into mebibytes per second so the number you get has something to be compared against.
The formula
kibibytes per second- The amount you are converting, in kibibytes per second
0.0009765625- The exact number of mebibytes per second in one kibibyte per second
mebibytes per second- The converted result
How it works, step by step
- Enter the value in kibibytes per second.
- It is multiplied by 0.0009765625, the exact factor between the two units.
- The answer is shown in mebibytes per second, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
4K video stream: 3050 KiB/s in mebibytes per second
Take 4k video stream, roughly 3050 KiB/s. The conversion is a single multiplication — 3050 × 0.000976562 — giving 2.97852 MiB/s. Because the relationship is proportional, doubling the input doubles the answer to 5.95703 MiB/s.
Wired gigabit Ethernet: 1.22e+05 KiB/s in mebibytes per second
At 1.22e+05 KiB/s (wired gigabit ethernet), the same quantity in mebibytes per second is 1.22e+05 × 0.000976562 = 119.141 MiB/s. One kibibyte per second is 0.000976562 mebibytes per second, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many mebibytes per second are in one kibibyte per second?
Exactly 0.0009765625. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert kibibytes per second to mebibytes per second?
mebibytes per second = kibibytes per second × 0.0009765625. Reversed, kibibytes per second = mebibytes per second ÷ 0.0009765625, which is the same as multiplying by 1024.
Which is the bigger unit, the kibibyte per second or the mebibyte per second?
The mebibyte per second. One kibibyte per second is only 0.000976562 of a mebibyte per second, so it takes 1024 kibibytes per second to make one mebibyte per second.
What does this quantity actually measure?
Both units measure how much data moves per second. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a kibibyte per second?
A kibibyte is exactly 1,024 bytes. Linux tools and torrent clients often report KiB/s while marketing uses kB/s, a 2.4% difference.
What is a mebibyte per second?
A mebibyte is 1,048,576 bytes, about 4.9% more than a megabyte. The gap is why a "100 MB/s" drive benchmarks at roughly 95 MiB/s.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Is there a quick way to do KiB/s to MiB/s in my head?
Plenty of people do this in their head: divide by 1000 instead of using the exact factor 0.0009765625. At 100 that shortcut gives 0.1 mebibytes per second, off by 0.002344 mebibytes per second or about 2.40%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Kibibytes Per Second to mebibytes per second reference tables
| Kibibytes Per Second | Mebibytes Per Second |
|---|---|
| 0.5 KiB/s | 0.000488281 MiB/s |
| 1 KiB/s | 0.000976562 MiB/s |
| 2 KiB/s | 0.00195312 MiB/s |
| 3 KiB/s | 0.00292969 MiB/s |
| 5 KiB/s | 0.00488281 MiB/s |
| 10 KiB/s | 0.00976562 MiB/s |
| 20 KiB/s | 0.0195312 MiB/s |
| 25 KiB/s | 0.0244141 MiB/s |
| 50 KiB/s | 0.0488281 MiB/s |
| 75 KiB/s | 0.0732422 MiB/s |
| 100 KiB/s | 0.0976562 MiB/s |
| 250 KiB/s | 0.244141 MiB/s |
| 500 KiB/s | 0.488281 MiB/s |
| 1000 KiB/s | 0.976562 MiB/s |
| 5000 KiB/s | 4.88281 MiB/s |
Exact factor: 1 kibibyte per second = 0.0009765625 mebibytes per second.
| Quantity | KiB/s | MiB/s |
|---|---|---|
| MP3 audio, 320 kbps | 39.06 KiB/s | 0.03815 MiB/s |
| SD video stream | 366.2 KiB/s | 0.3576 MiB/s |
| HD video stream | 976.6 KiB/s | 0.9537 MiB/s |
| 4K video stream | 3052 KiB/s | 2.98 MiB/s |
| Wired gigabit Ethernet | 1.221e+05 KiB/s | 119.2 MiB/s |
| Wi-Fi 6 link rate | 1.465e+05 KiB/s | 143.1 MiB/s |
Published reference values, converted with the same factor this page uses.