To convert bits per second to kibibytes per second, multiply by 0.0001220703125. 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.
One bit per second is the base unit of data rate. Network speeds are always quoted in bits, which is why a 100 Mbps line downloads at about 12 MB/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. The tables underneath give both a plain step-by-step lookup and a list of real quantities expressed in kibibytes per second, so you can sanity-check whether your answer is a plausible size.
The formula
bits per second- The amount you are converting, in bits per second
0.0001220703125- The exact number of kibibytes per second in one bit per second
kibibytes per second- The converted result
How it works, step by step
- Enter the value in bits per second.
- It is multiplied by 0.0001220703125, the exact factor between the two units.
- The answer is shown in kibibytes per second, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
MP3 audio, 320 kbps: 3.2e+05 bit/s in kibibytes per second
At 3.2e+05 bit/s (mp3 audio, 320 kbps), the same quantity in kibibytes per second is 3.2e+05 × 0.00012207 = 39.0625 KiB/s. One bit per second is 0.00012207 kibibytes per second, so the numbers shrink as expected.
SD video stream: 3e+06 bit/s in kibibytes per second
SD video stream comes to about 3e+06 bit/s. Multiplying by the factor: 3e+06 × 0.00012207 = 366.211 KiB/s. Dividing the answer back by 0.00012207 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
How to read your score
Frequently asked questions
How many kibibytes per second are in one bit per second?
Exactly 0.0001220703125. 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 bits per second to kibibytes per second?
kibibytes per second = bits per second × 0.0001220703125. Reversed, bits per second = kibibytes per second ÷ 0.0001220703125, which is the same as multiplying by 8192.
Which is the bigger unit, the bit per second or the kibibyte per second?
The kibibyte per second. One bit per second is only 0.00012207 of a kibibyte per second, so it takes 8192 bits per second to make one kibibyte 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 bit per second?
One bit per second is the base unit of data rate. Network speeds are always quoted in bits, which is why a 100 Mbps line downloads at about 12 MB/s.
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.
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 bit/s to KiB/s in my head?
Plenty of people do this in their head: divide by 8000 instead of using the exact factor 0.0001220703125. At 100 that shortcut gives 0.0125 kibibytes per second, off by 0.000293 kibibytes per second or about 2.40%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Bits Per Second to kibibytes per second reference tables
| Bits Per Second | Kibibytes Per Second |
|---|---|
| 0.5 bit/s | 6.10352e-05 KiB/s |
| 1 bit/s | 0.00012207 KiB/s |
| 2 bit/s | 0.000244141 KiB/s |
| 3 bit/s | 0.000366211 KiB/s |
| 5 bit/s | 0.000610352 KiB/s |
| 10 bit/s | 0.0012207 KiB/s |
| 20 bit/s | 0.00244141 KiB/s |
| 25 bit/s | 0.00305176 KiB/s |
| 50 bit/s | 0.00610352 KiB/s |
| 75 bit/s | 0.00915527 KiB/s |
| 100 bit/s | 0.012207 KiB/s |
| 250 bit/s | 0.0305176 KiB/s |
| 500 bit/s | 0.0610352 KiB/s |
| 1000 bit/s | 0.12207 KiB/s |
| 5000 bit/s | 0.610352 KiB/s |
Exact factor: 1 bit per second = 0.0001220703125 kibibytes per second.
| Quantity | bit/s | KiB/s |
|---|---|---|
| MP3 audio, 320 kbps | 3.2e+05 bit/s | 39.06 KiB/s |
| SD video stream | 3e+06 bit/s | 366.2 KiB/s |
| HD video stream | 8e+06 bit/s | 976.6 KiB/s |
| 4K video stream | 2.5e+07 bit/s | 3052 KiB/s |
| Wired gigabit Ethernet | 1e+09 bit/s | 1.221e+05 KiB/s |
| Wi-Fi 6 link rate | 1.2e+09 bit/s | 1.465e+05 KiB/s |
Published reference values, converted with the same factor this page uses.