To convert terabits per second to megabytes per second, multiply by 125,000. 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.
Terabits per second describes backbone and submarine cable capacity rather than anything you can buy for a house. Megabytes per second is the honest measure of transfer speed, and the unit disk benchmarks use. An 8 MB/s transfer is a 64 Mbps link running flat out.
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 megabytes per second so the number you get has something to be compared against.
The formula
terabits per second- The amount you are converting, in terabits per second
125,000- The exact number of megabytes per second in one terabit per second
megabytes per second- The converted result
How it works, step by step
- Enter the value in terabits per second.
- It is multiplied by 125,000, the exact factor between the two units.
- The answer is shown in megabytes per second, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
Wi-Fi 6 link rate: 0.0012 Tbit/s in megabytes per second
Take wi-fi 6 link rate, roughly 0.0012 Tbit/s. The conversion is a single multiplication — 0.0012 × 125,000 — giving 150 MB/s. Because the relationship is proportional, doubling the input doubles the answer to 300 MB/s.
Wired gigabit Ethernet: 0.001 Tbit/s in megabytes per second
Wired gigabit Ethernet comes to about 0.001 Tbit/s. Multiplying by the factor: 0.001 × 125,000 = 125 MB/s. Dividing the answer back by 125,000 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 megabytes per second are in one terabit per second?
Exactly 125,000. 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 terabits per second to megabytes per second?
megabytes per second = terabits per second × 125,000. Reversed, terabits per second = megabytes per second ÷ 125,000, which is the same as multiplying by 8e-06.
Which is the bigger unit, the terabit per second or the megabyte per second?
The terabit per second. One terabit per second equals 125,000 megabytes 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 terabit per second?
Terabits per second describes backbone and submarine cable capacity rather than anything you can buy for a house.
What is a megabyte per second?
Megabytes per second is the honest measure of transfer speed, and the unit disk benchmarks use. An 8 MB/s transfer is a 64 Mbps link running flat out.
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 Tbit/s to MB/s in my head?
Plenty of people do this in their head: multiply by 120,000 instead of using the exact factor 125,000. At 100 that shortcut gives 12,000,000 megabytes per second, off by 500000.000000 megabytes per second or about 4.00%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Terabits Per Second to megabytes per second reference tables
| Terabits Per Second | Megabytes Per Second |
|---|---|
| 0.5 Tbit/s | 62,500 MB/s |
| 1 Tbit/s | 125,000 MB/s |
| 2 Tbit/s | 250,000 MB/s |
| 3 Tbit/s | 375,000 MB/s |
| 5 Tbit/s | 625,000 MB/s |
| 10 Tbit/s | 1.25e+06 MB/s |
| 20 Tbit/s | 2.5e+06 MB/s |
| 25 Tbit/s | 3.125e+06 MB/s |
| 50 Tbit/s | 6.25e+06 MB/s |
| 75 Tbit/s | 9.375e+06 MB/s |
| 100 Tbit/s | 1.25e+07 MB/s |
| 250 Tbit/s | 3.125e+07 MB/s |
| 500 Tbit/s | 6.25e+07 MB/s |
| 1000 Tbit/s | 1.25e+08 MB/s |
| 5000 Tbit/s | 6.25e+08 MB/s |
Exact factor: 1 terabit per second = 125,000 megabytes per second.
| Quantity | Tbit/s | MB/s |
|---|---|---|
| MP3 audio, 320 kbps | 3.2e-07 Tbit/s | 0.04 MB/s |
| SD video stream | 3e-06 Tbit/s | 0.375 MB/s |
| HD video stream | 8e-06 Tbit/s | 1 MB/s |
| 4K video stream | 2.5e-05 Tbit/s | 3.125 MB/s |
| Wired gigabit Ethernet | 0.001 Tbit/s | 125 MB/s |
| Wi-Fi 6 link rate | 0.0012 Tbit/s | 150 MB/s |
Published reference values, converted with the same factor this page uses.