To convert kilobits per second to gigabytes per second, multiply by 1.25e-07. 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.
Kilobits per second is the unit of audio bitrates and the old modem speeds. In networking a kilobit is exactly 1,000 bits, not 1,024. Gigabytes per second is the scale of NVMe storage and memory buses rather than networks.
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 gigabytes per second, so you can sanity-check whether your answer is a plausible size.
The formula
kilobits per second- The amount you are converting, in kilobits per second
1.25e-07- The exact number of gigabytes per second in one kilobit per second
gigabytes per second- The converted result
How it works, step by step
- Enter the value in kilobits per second.
- It is multiplied by 1.25e-07, the exact factor between the two units.
- The answer is shown in gigabytes 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: 320 kbit/s in gigabytes per second
At 320 kbit/s (mp3 audio, 320 kbps), the same quantity in gigabytes per second is 320 × 1.25e-07 = 4e-05 GB/s. One kilobit per second is 1.25e-07 gigabytes per second, so the numbers shrink as expected.
SD video stream: 3000 kbit/s in gigabytes per second
Take sd video stream, roughly 3000 kbit/s. The conversion is a single multiplication — 3000 × 1.25e-07 — giving 0.000375 GB/s. Because the relationship is proportional, doubling the input doubles the answer to 0.00075 GB/s.
How to read your score
Frequently asked questions
How many gigabytes per second are in one kilobit per second?
Exactly 1.25e-07. 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 kilobits per second to gigabytes per second?
gigabytes per second = kilobits per second × 1.25e-07. Reversed, kilobits per second = gigabytes per second ÷ 1.25e-07, which is the same as multiplying by 8,000,000.
Which is the bigger unit, the kilobit per second or the gigabyte per second?
The gigabyte per second. One kilobit per second is only 1.25e-07 of a gigabyte per second, so it takes 8e+06 kilobits per second to make one gigabyte 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 kilobit per second?
Kilobits per second is the unit of audio bitrates and the old modem speeds. In networking a kilobit is exactly 1,000 bits, not 1,024.
What is a gigabyte per second?
Gigabytes per second is the scale of NVMe storage and memory buses rather than networks.
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.
Kilobits Per Second to gigabytes per second reference tables
| Kilobits Per Second | Gigabytes Per Second |
|---|---|
| 0.5 kbit/s | 6.25e-08 GB/s |
| 1 kbit/s | 1.25e-07 GB/s |
| 2 kbit/s | 2.5e-07 GB/s |
| 3 kbit/s | 3.75e-07 GB/s |
| 5 kbit/s | 6.25e-07 GB/s |
| 10 kbit/s | 1.25e-06 GB/s |
| 20 kbit/s | 2.5e-06 GB/s |
| 25 kbit/s | 3.125e-06 GB/s |
| 50 kbit/s | 6.25e-06 GB/s |
| 75 kbit/s | 9.375e-06 GB/s |
| 100 kbit/s | 1.25e-05 GB/s |
| 250 kbit/s | 3.125e-05 GB/s |
| 500 kbit/s | 6.25e-05 GB/s |
| 1000 kbit/s | 0.000125 GB/s |
| 5000 kbit/s | 0.000625 GB/s |
Exact factor: 1 kilobit per second = 1.25e-07 gigabytes per second.
| Quantity | kbit/s | GB/s |
|---|---|---|
| MP3 audio, 320 kbps | 320 kbit/s | 4e-05 GB/s |
| SD video stream | 3000 kbit/s | 0.000375 GB/s |
| HD video stream | 8000 kbit/s | 0.001 GB/s |
| 4K video stream | 2.5e+04 kbit/s | 0.003125 GB/s |
| Wired gigabit Ethernet | 1e+06 kbit/s | 0.125 GB/s |
| Wi-Fi 6 link rate | 1.2e+06 kbit/s | 0.15 GB/s |
Published reference values, converted with the same factor this page uses.