Data transfer rate converter
ConvertersNo. 19 / 84
Convert Mbps, Gbps, MB/s and more in one screen. See why a 1 Gbps line downloads at about 125 MB/s.
the internet is fast until you divide by eight.
work surface
Math, not advice — results are indicative.Read the disclaimer.
most-used utilities
Check a broadband plan
Enter the advertised Mbps and read the MB/s figure a download will show.
Size a backup window
Convert GB/s and MB/s to see how long a large transfer should take.
Compare bits and bytes
Put the value in Mbps and read the same speed in MB/s without doing the divide in your head.
pro tips
Divide Mbps by 8 to get MB/s. Divide by 8 again if you are comparing with a very optimistic marketing claim.
1 Gbps is 125 MB/s, not 1000 MB/s. The missing factor of eight is the whole confusion.
Real throughput is lower than the line rate; protocol overhead and Wi-Fi eat into it.
what it does
Network speeds are sold in bits per second and files are measured in bytes, and the two do not share a number. One byte is eight bits, so a connection advertised at 1 Gbps moves about 125 MB/s in a download manager. The math is simple; the marketing is what makes it feel like a trick.
This converter handles both families at once: bits per second (bps, Kbps, Mbps, Gbps) and bytes per second (B/s, KB/s, MB/s, GB/s). Type one value, pick its unit, and every other unit updates. Decimal prefixes are used throughout, matching how ISPs and storage vendors quote capacity.
The everyday case is a broadband plan. "Up to 500 Mbps" means roughly 62.5 MB/s on a good day, and a 5 GB download takes about 80 seconds at that rate before overhead. The same arithmetic explains why a 1 Gbps office line feels slower than the number suggests once twelve people share it.
Results update live and every card is click-to-copy. The widget also accepts presets, so a guide or a note can drop a value and unit straight into the panel.
quick answers
Why is 1 Gbps not 1000 MB/s?
Because the units differ: gigabits versus megabytes. Eight bits make a byte, so 1 Gbps is 125 MB/s.
Does this use 1000 or 1024?
It uses decimal prefixes (1000), which is the standard for network speeds and storage marketing. Binary prefixes like KiB/s are a different conversation.
What about overhead?
The converter shows the raw rate. Real downloads are slower because of protocol overhead, Wi-Fi, server limits and the fact that the internet is a shared place.