→
12.50 MB/s
Divide by 8. Network providers use bits; file dialogs usually show bytes.
Speed & transfer
Mbps to MB/s Converter
Turn megabits per second (what your plan says) into megabytes per second (what your downloads show). Instant, no button needed.
Short answer: divide Mbps by 8 to get MB/s. A 100 Mbps connection moves about 12.5 megabytes every second.
Why are there two different numbers?
Internet providers measure in bits because it makes the numbers look bigger and it is the networking tradition. Computers measure files in bytes. One byte is made of eight bits, so the same speed gets two different labels. Nothing is being hidden, it is just two measuring systems side by side.
Handy reference
| Plan speed | Real download speed |
|---|---|
| 25 Mbps | about 3.1 MB/s |
| 50 Mbps | about 6.3 MB/s |
| 100 Mbps | about 12.5 MB/s |
| 300 Mbps | about 37.5 MB/s |
| 1,000 Mbps | about 125 MB/s |
Spot the difference in writing
A small b means bits and a capital B means bytes. “Mb” is megabits, “MB” is megabytes. It is easy to miss, and it is behind most “why is my internet 8 times slower than advertised?” questions.
Need the opposite direction? Use the MB/s to Mbps converter.
FAQ
Frequently asked questions about the Mbps to MB/s Converter
How many MB/s is 100 Mbps?
100 Mbps is 12.5 MB/s. Divide by 8.
Is Mbps the same as MB/s?
No. Mbps counts bits and MB/s counts bytes. There are 8 bits in a byte, so a MB/s number is always 8 times smaller than the Mbps number for the same speed.
Why does my download show less than my plan speed?
Part of it is units: your plan says Mbps and your download shows MB/s. Even after converting, a small amount is lost to overhead, so expect about 90 to 95% of the converted number.
Does this use 1,000 or 1,024?
Network speeds use 1,000, which is what this tool uses. Only file storage sometimes uses 1,024.
KEEP GOING
Related tools
Internet Speed Calculator
Type in your download, upload and ping and get a plain-English verdict, a score out of 100 and what your line can really handle.
Use this toolDownload Speed Calculator
Worked out how long a file took to download? Get your real speed in Mbps and MB/s, and see how it compares with your plan.
Use this toolUpload Speed Calculator
Know how long an upload took? Turn the file size and time into your real upload speed and see how it compares with your plan.
Use this toolMB/s to Mbps Converter
Turn a download speed in MB/s into the Mbps number you see on your internet plan. Multiply by 8, done for you.
Use this toolKbps to Mbps Converter
Convert kilobits per second to megabits per second as you type. Handy for old plans, audio bitrates and mobile data speeds.
Use this toolDownload Time Calculator
How long will that download take? Enter the file size and your speed to get a realistic time and a finish clock time.
Use this toolResults are estimates for planning. Last reviewed 2 October 2026.