One bit per second is exactly 1e-09 gigabits per second, so converting bits per second to gigabits per second is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
Gigabit per second is the rate of standard wired Ethernet and the faster fibre tiers. 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 gigabits 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
1e-09- The exact number of gigabits per second in one bit per second
gigabits per second- The converted result
How it works, step by step
- Enter the value in bits per second.
- It is multiplied by 1e-09, the exact factor between the two units.
- The answer is shown in gigabits per second, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
SD video stream: 3e+06 bit/s in gigabits per second
Take sd video stream, roughly 3e+06 bit/s. The conversion is a single multiplication — 3e+06 × 1e-09 — giving 0.003 Gbit/s. Because the relationship is proportional, doubling the input doubles the answer to 0.006 Gbit/s.
MP3 audio, 320 kbps: 3.2e+05 bit/s in gigabits per second
At 3.2e+05 bit/s (mp3 audio, 320 kbps), the same quantity in gigabits per second is 3.2e+05 × 1e-09 = 0.00032 Gbit/s. One bit per second is 1e-09 gigabits per second, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many gigabits per second are in one bit per second?
Exactly 1e-09. 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 gigabits per second?
gigabits per second = bits per second × 1e-09. Reversed, bits per second = gigabits per second ÷ 1e-09, which is the same as multiplying by 1,000,000,000.
Which is the bigger unit, the bit per second or the gigabit per second?
The gigabit per second. One bit per second is only 1e-09 of a gigabit per second, so it takes 1e+09 bits per second to make one gigabit 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 gigabit per second?
Gigabit per second is the rate of standard wired Ethernet and the faster fibre tiers.
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 gigabits per second reference tables
| Bits Per Second | Gigabits Per Second |
|---|---|
| 0.5 bit/s | 5.00000e-10 Gbit/s |
| 1 bit/s | 1e-09 Gbit/s |
| 2 bit/s | 2e-09 Gbit/s |
| 3 bit/s | 3e-09 Gbit/s |
| 5 bit/s | 5e-09 Gbit/s |
| 10 bit/s | 1e-08 Gbit/s |
| 20 bit/s | 2e-08 Gbit/s |
| 25 bit/s | 2.5e-08 Gbit/s |
| 50 bit/s | 5e-08 Gbit/s |
| 75 bit/s | 7.5e-08 Gbit/s |
| 100 bit/s | 1e-07 Gbit/s |
| 250 bit/s | 2.5e-07 Gbit/s |
| 500 bit/s | 5e-07 Gbit/s |
| 1000 bit/s | 1e-06 Gbit/s |
| 5000 bit/s | 5e-06 Gbit/s |
Exact factor: 1 bit per second = 1e-09 gigabits per second.
| Quantity | bit/s | Gbit/s |
|---|---|---|
| MP3 audio, 320 kbps | 3.2e+05 bit/s | 0.00032 Gbit/s |
| SD video stream | 3e+06 bit/s | 0.003 Gbit/s |
| HD video stream | 8e+06 bit/s | 0.008 Gbit/s |
| 4K video stream | 2.5e+07 bit/s | 0.025 Gbit/s |
| Wired gigabit Ethernet | 1e+09 bit/s | 1 Gbit/s |
| Wi-Fi 6 link rate | 1.2e+09 bit/s | 1.2 Gbit/s |
Published reference values, converted with the same factor this page uses.