This page converts bytes per second into terabits per second using the factor 8.000000000e-12, and shows the reverse figure alongside it. Both units measure how much data moves per second, which is why one number does the whole job.
Terabits per second describes backbone and submarine cable capacity rather than anything you can buy for a house. 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.
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 terabits per second so the number you get has something to be compared against.
The formula
bytes per second- The amount you are converting, in bytes per second
8.00000000000e-12- The exact number of terabits per second in one byte per second
terabits per second- The converted result
How it works, step by step
- Enter the value in bytes per second.
- It is multiplied by 8.00000000000e-12, the exact factor between the two units.
- The answer is shown in terabits per second, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
HD video stream: 1e+06 B/s in terabits per second
At 1e+06 B/s (hd video stream), the same quantity in terabits per second is 1e+06 × 8.00000e-12 = 8e-06 Tbit/s. One byte per second is 8.00000e-12 terabits per second, so the numbers shrink as expected.
4K video stream: 3.12e+06 B/s in terabits per second
Take 4k video stream, roughly 3.12e+06 B/s. The conversion is a single multiplication — 3.12e+06 × 8.00000e-12 — giving 2.496e-05 Tbit/s. Because the relationship is proportional, doubling the input doubles the answer to 4.992e-05 Tbit/s.
How to read your score
Frequently asked questions
How many terabits per second are in one byte per second?
Exactly 8.00000000000e-12. 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 bytes per second to terabits per second?
terabits per second = bytes per second × 8.00000000000e-12. Reversed, bytes per second = terabits per second ÷ 8.00000000000e-12, which is the same as multiplying by 125,000,000,000.
Which is the bigger unit, the byte per second or the terabit per second?
The terabit per second. One byte per second is only 8.00000e-12 of a terabit per second, so it takes 1.25e+11 bytes per second to make one terabit 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 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.
What is a terabit per second?
Terabits per second describes backbone and submarine cable capacity rather than anything you can buy for a house.
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.
Bytes Per Second to terabits per second reference tables
| Bytes Per Second | Terabits Per Second |
|---|---|
| 0.5 B/s | 4.00000e-12 Tbit/s |
| 1 B/s | 8.00000e-12 Tbit/s |
| 2 B/s | 1.60000e-11 Tbit/s |
| 3 B/s | 2.40000e-11 Tbit/s |
| 5 B/s | 4.00000e-11 Tbit/s |
| 10 B/s | 8.00000e-11 Tbit/s |
| 20 B/s | 1.60000e-10 Tbit/s |
| 25 B/s | 2.00000e-10 Tbit/s |
| 50 B/s | 4.00000e-10 Tbit/s |
| 75 B/s | 6.00000e-10 Tbit/s |
| 100 B/s | 8.00000e-10 Tbit/s |
| 250 B/s | 2e-09 Tbit/s |
| 500 B/s | 4e-09 Tbit/s |
| 1000 B/s | 8e-09 Tbit/s |
| 5000 B/s | 4e-08 Tbit/s |
Exact factor: 1 byte per second = 8.00000000000e-12 terabits per second.
| Quantity | B/s | Tbit/s |
|---|---|---|
| MP3 audio, 320 kbps | 4e+04 B/s | 3.2e-07 Tbit/s |
| SD video stream | 3.75e+05 B/s | 3e-06 Tbit/s |
| HD video stream | 1e+06 B/s | 8e-06 Tbit/s |
| 4K video stream | 3.125e+06 B/s | 2.5e-05 Tbit/s |
| Wired gigabit Ethernet | 1.25e+08 B/s | 0.001 Tbit/s |
| Wi-Fi 6 link rate | 1.5e+08 B/s | 0.0012 Tbit/s |
Published reference values, converted with the same factor this page uses.