To convert bits per second to bytes per second, multiply by 0.125. 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 byte per second is eight bits per second. File transfer tools report bytes, which is the single most common source of confusion about whether a connection is running at its rated speed. 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.
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 bytes 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
0.125- The exact number of bytes per second in one bit per second
bytes per second- The converted result
How it works, step by step
- Enter the value in bits per second.
- It is multiplied by 0.125, the exact factor between the two units.
- The answer is shown in bytes 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 bytes per second
At 3.2e+05 bit/s (mp3 audio, 320 kbps), the same quantity in bytes per second is 3.2e+05 × 0.125 = 40,000 B/s. One bit per second is 0.125 bytes per second, so the numbers shrink as expected.
SD video stream: 3e+06 bit/s in bytes per second
Take sd video stream, roughly 3e+06 bit/s. The conversion is a single multiplication — 3e+06 × 0.125 — giving 375,000 B/s. Because the relationship is proportional, doubling the input doubles the answer to 750,000 B/s.
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Frequently asked questions
How many bytes per second are in one bit per second?
Exactly 0.125. 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 bytes per second?
bytes per second = bits per second × 0.125. Reversed, bits per second = bytes per second ÷ 0.125, which is the same as multiplying by 8.
Which is the bigger unit, the bit per second or the byte per second?
The byte per second. One bit per second is only 0.125 of a byte per second, so it takes 8 bits per second to make one byte 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 byte per second?
One byte per second is eight bits per second. File transfer tools report bytes, which is the single most common source of confusion about whether a connection is running at its rated speed.
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.
Bits Per Second to bytes per second reference tables
| Bits Per Second | Bytes Per Second |
|---|---|
| 0.5 bit/s | 0.0625 B/s |
| 1 bit/s | 0.125 B/s |
| 2 bit/s | 0.25 B/s |
| 3 bit/s | 0.375 B/s |
| 5 bit/s | 0.625 B/s |
| 10 bit/s | 1.25 B/s |
| 20 bit/s | 2.5 B/s |
| 25 bit/s | 3.125 B/s |
| 50 bit/s | 6.25 B/s |
| 75 bit/s | 9.375 B/s |
| 100 bit/s | 12.5 B/s |
| 250 bit/s | 31.25 B/s |
| 500 bit/s | 62.5 B/s |
| 1000 bit/s | 125 B/s |
| 5000 bit/s | 625 B/s |
Exact factor: 1 bit per second = 0.125 bytes per second.
| Quantity | bit/s | B/s |
|---|---|---|
| MP3 audio, 320 kbps | 3.2e+05 bit/s | 4e+04 B/s |
| SD video stream | 3e+06 bit/s | 3.75e+05 B/s |
| HD video stream | 8e+06 bit/s | 1e+06 B/s |
| 4K video stream | 2.5e+07 bit/s | 3.125e+06 B/s |
| Wired gigabit Ethernet | 1e+09 bit/s | 1.25e+08 B/s |
| Wi-Fi 6 link rate | 1.2e+09 bit/s | 1.5e+08 B/s |
Published reference values, converted with the same factor this page uses.