Mbps to Gbps
Convert megabit/second to gigabit/second instantly — type a value and read the result, with the exact formula shown.
Reviewed by the CalcCafe editorial team · Last updated 1 July 2026 · How we test our tools
Example
1 Mbps = 0.001 Gbps, 5 Mbps = 0.005 Gbps, 10 Mbps = 0.01 Gbps.
Common conversions: megabit/second to gigabit/second
Quick reference for the Mbps → Gbps values you are most likely to need, computed with the exact factor the converter above uses. It includes the specific values people most often look up (1,000 Mbps, 100 Mbps, 1,024 Mbps, 10,000 Mbps, 500 Mbps).
| Megabit/second (Mbps) | Gigabit/second (Gbps) |
|---|
| 1 Mbps | 0.001 Gbps |
| 2 Mbps | 0.002 Gbps |
| 3 Mbps | 0.003 Gbps |
| 5 Mbps | 0.005 Gbps |
| 10 Mbps | 0.01 Gbps |
| 15 Mbps | 0.015 Gbps |
| 20 Mbps | 0.02 Gbps |
| 25 Mbps | 0.025 Gbps |
| 30 Mbps | 0.03 Gbps |
| 40 Mbps | 0.04 Gbps |
| 50 Mbps | 0.05 Gbps |
| 60 Mbps | 0.06 Gbps |
| 70 Mbps | 0.07 Gbps |
| 75 Mbps | 0.075 Gbps |
| 80 Mbps | 0.08 Gbps |
| 90 Mbps | 0.09 Gbps |
| 100 Mbps | 0.1 Gbps |
| 150 Mbps | 0.15 Gbps |
| 200 Mbps | 0.2 Gbps |
| 250 Mbps | 0.25 Gbps |
| 400 Mbps | 0.4 Gbps |
| 500 Mbps | 0.5 Gbps |
| 1,000 Mbps | 1 Gbps |
| 1,024 Mbps | 1.024 Gbps |
| 10,000 Mbps | 10 Gbps |
Gigabit/second to Megabit/second
| Gigabit/second (Gbps) | Megabit/second (Mbps) |
|---|
| 1 Gbps | 1,000 Mbps |
| 5 Gbps | 5,000 Mbps |
| 10 Gbps | 10,000 Mbps |
| 50 Gbps | 50,000 Mbps |
| 100 Gbps | 100,000 Mbps |
How it works
Gigabit/second = Megabit/second × 0.001. Every value is converted through a single bit/second base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Converting Mbps to Gbps comes up the moment a network outgrows everyday speeds: comparing a 300 Mbps home broadband plan against a 1 Gbps fiber upgrade, sizing the uplink on an office switch, or reading a data-center port spec written as 25,000 Mbps instead of 25 Gbps. Both units measure the same thing — bits flowing per second — so the only job is shifting the prefix from "mega" (million) to "giga" (billion).
These are decimal SI units, not the binary ones used for file sizes. The "giga" in Gbps means exactly 1,000 megabits, because networking gear and ISPs count throughput in powers of ten, unlike RAM or disk capacity where a "gigabyte" can mean 1,024 mebibytes. That is why 1 Gbps = 1,000 Mbps cleanly, with no 1,024 fudge factor anywhere in the chain.
The rule of thumb is simply: move the decimal point three places left. 250 Mbps becomes 0.25 Gbps; 940 Mbps (a typical "gigabit" line after overhead) is 0.94 Gbps. To go the other way, multiply by 1,000.
The most common mistake is confusing bits with bytes. Gbps is gigabits per second, not gigabytes; a 1 Gbps connection delivers roughly 125 megabytes per second at most, since one byte is eight bits. Watch the case too — lowercase "b" means bits, capital "B" means bytes, and mixing them up overstates your real download speed by a factor of eight.
Frequently asked questions
How do you convert megabit/second to gigabit/second?
Multiply the number of megabit/seconds by 0.001 to get gigabit/seconds. For example, 1 Mbps = 0.001 Gbps.
What is 1 megabit/second in gigabit/seconds?
1 megabit/second equals 0.001 gigabit/seconds (1 Mbps = 0.001 Gbps).
How many megabit/seconds are in 1 gigabit/second?
There are 1,000 megabit/seconds in 1 gigabit/second.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
Is 1000 Mbps the same as 1 Gbps?
Yes. 1 Gbps equals exactly 1,000 Mbps because these are decimal networking units where giga means one billion bits per second and mega means one million.
How fast is 500 Mbps in Gbps?
500 Mbps is 0.5 Gbps. Just divide by 1,000 (or move the decimal three places left).
Is 1 Gbps fast for home internet?
Yes, 1 Gbps (1,000 Mbps) is among the fastest residential tiers available and is far more than most households need; a single 4K stream uses only about 25 Mbps.
How many gigabytes per second is 1 Gbps?
1 Gbps is about 0.125 gigabytes per second, or roughly 125 megabytes per second, because there are 8 bits in a byte.
What is 940 Mbps in Gbps?
940 Mbps is 0.94 Gbps. This is a common real-world speed on so-called gigabit plans, since protocol overhead trims the headline 1,000 Mbps.
Why does my gigabit plan show speeds under 1 Gbps?
Wi-Fi limits, Ethernet overhead, and ISP provisioning typically cap real throughput around 900-950 Mbps (0.9-0.95 Gbps), even on a 1 Gbps connection.
How do I convert Gbps back to Mbps?
Multiply the Gbps value by 1,000. For example, 2.5 Gbps equals 2,500 Mbps.
Is Gbps bigger than Mbps?
Yes. One Gbps is 1,000 times larger than one Mbps, so any speed in Gbps represents a much higher data rate.
Is 300 Mbps overkill?
For a typical household, 300 Mbps (0.3 Gbps) is more than enough: a 4K stream uses on the order of 25 Mbps, so 300 Mbps could run about a dozen at once, and video calls, gaming, and browsing need far less. It starts to matter if you regularly download very large files, back up to the cloud, or have many people and devices online together. Whether it is overkill really comes down to price; if the 300 Mbps tier costs little more than a slower one, it is rarely wasted.
Is 500 Mbps overkill for 2 people?
For two people, 500 Mbps (0.5 Gbps) is generous and most of the time it will sit idle. Two 4K streams, a couple of video calls, and some gaming together add up to well under 100 Mbps, so the extra headroom only shows up when downloading games or large files, where a 50 GB download takes about 13 minutes at 500 Mbps versus 33 minutes at 200 Mbps. Upload speed and connection reliability usually matter more to a two-person household than raw download rate.
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Sources & references
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