To convert kilobytes per second to megabytes per second, multiply by 0.001. 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.
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. Kilobytes per second is what a download dialog shows on a slow connection: 1 kB/s is 8 kbit/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. Two tables follow: rounded steps for quick lookup, and a set of real reference quantities converted into megabytes per second, which is usually more useful than the bare number.
The formula
kilobytes per second- The amount you are converting, in kilobytes per second
0.001- The exact number of megabytes per second in one kilobyte per second
megabytes per second- The converted result
How it works, step by step
- Enter the value in kilobytes per second.
- It is multiplied by 0.001, 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: 1.5e+05 kB/s in megabytes per second
At 1.5e+05 kB/s (wi-fi 6 link rate), the same quantity in megabytes per second is 1.5e+05 × 0.001 = 150 MB/s. One kilobyte per second is 0.001 megabytes per second, so the numbers shrink as expected.
HD video stream: 1000 kB/s in megabytes per second
Take hd video stream, roughly 1000 kB/s. The conversion is a single multiplication — 1000 × 0.001 — giving 1 MB/s. Because the relationship is proportional, doubling the input doubles the answer to 2 MB/s.
How to read your score
Frequently asked questions
How many megabytes per second are in one kilobyte per second?
Exactly 0.001. 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 kilobytes per second to megabytes per second?
megabytes per second = kilobytes per second × 0.001. Reversed, kilobytes per second = megabytes per second ÷ 0.001, which is the same as multiplying by 1000.
Which is the bigger unit, the kilobyte per second or the megabyte per second?
The megabyte per second. One kilobyte per second is only 0.001 of a megabyte per second, so it takes 1000 kilobytes per second to make one megabyte 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 kilobyte per second?
Kilobytes per second is what a download dialog shows on a slow connection: 1 kB/s is 8 kbit/s.
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.
Kilobytes Per Second to megabytes per second reference tables
| Kilobytes Per Second | Megabytes Per Second |
|---|---|
| 0.5 kB/s | 0.0005 MB/s |
| 1 kB/s | 0.001 MB/s |
| 2 kB/s | 0.002 MB/s |
| 3 kB/s | 0.003 MB/s |
| 5 kB/s | 0.005 MB/s |
| 10 kB/s | 0.01 MB/s |
| 20 kB/s | 0.02 MB/s |
| 25 kB/s | 0.025 MB/s |
| 50 kB/s | 0.05 MB/s |
| 75 kB/s | 0.075 MB/s |
| 100 kB/s | 0.1 MB/s |
| 250 kB/s | 0.25 MB/s |
| 500 kB/s | 0.5 MB/s |
| 1000 kB/s | 1 MB/s |
| 5000 kB/s | 5 MB/s |
Exact factor: 1 kilobyte per second = 0.001 megabytes per second.
| Quantity | kB/s | MB/s |
|---|---|---|
| MP3 audio, 320 kbps | 40 kB/s | 0.04 MB/s |
| SD video stream | 375 kB/s | 0.375 MB/s |
| HD video stream | 1000 kB/s | 1 MB/s |
| 4K video stream | 3125 kB/s | 3.125 MB/s |
| Wired gigabit Ethernet | 1.25e+05 kB/s | 125 MB/s |
| Wi-Fi 6 link rate | 1.5e+05 kB/s | 150 MB/s |
Published reference values, converted with the same factor this page uses.