Mbps to MB/s Converter
Type your internet speed in Mbps to get the download speed in MB/s that browsers and game launchers show.
100 Mbit/s =
12.5MB/s
100 megabits per second is 12.5 megabytes per second.
- 1 Mbit/s
- 0.125 MB/s
- 1 MB/s
- 8 Mbit/s
How this works: Method, 4 sources,
How this works
Method
Divide megabits per second by 8. Internet plans are sold in bits per second, but browsers, Steam and file managers show downloads in bytes per second, and a byte is 8 bits. A 300 Mbps plan can move at most 300 ÷ 8 = 37.5 MB/s. Full method
Sources
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Changes
- Ask understands “5 ft 9 in to cm” and “2 cups of flour in grams” and answers at once, and a decimal comma (“2,5”) reads as 2.5.
- First published: 89 everyday units across ten quantities, with 58 pages for common pairs such as cm to inches and Celsius to Fahrenheit.
How to convert Mbps to MB/s
Divide megabits per second by 8. Internet plans are sold in bits per second, but browsers, Steam and file managers show downloads in bytes per second, and a byte is 8 bits. A 300 Mbps plan can move at most 300 ÷ 8 = 37.5 MB/s.
Watch the letter case: a small b means bits (Mb, Mbps), a capital B means bytes (MB, MB/s). Some download tools also use binary mebibytes, so the same 300 Mbps can appear as 35.76 MiB/s.
Real downloads come in below the line speed, because every packet carries headers, Wi-Fi adds its own overhead, and the server at the other end may be the slower side. Treat the converted figure as a ceiling, not a promise.
megabytes per second = megabits per second ÷ 8
- A byte is 8 bits, so 1 MB/s is 8 Mbit/s; the binary MiB/s is 8 × 1,048,576 bits per second. Source: NIST, Prefixes for binary multiples (IEC 80000-13).
How to estimate Mbps to MB/s in your head
Halve three times: 200 Mbps → 100 → 50 → 25 MB/s. Or divide by 10 for a slightly pessimistic figure that already allows for some overhead: 200 Mbps gives “about 20 MB/s”.
To guess a download time, multiply the file size in GB by 8,000 and divide by your Mbps: a 50 GB game at 100 Mbps takes at least 4,000 seconds, a little over an hour.
Mbps to MB/s chart
Common plan speeds in megabits per second, the best-case download speed in megabytes per second, and the fastest possible time to fetch 1 GB.
| Plan speed (Mbps) | MB/s (÷ 8) | MiB/s | 1 GB takes at least |
|---|---|---|---|
| 5 | 0.625 | 0.596 | 26 min 40 s |
| 10 | 1.25 | 1.1921 | 13 min 20 s |
| 25 | 3.125 | 2.9802 | 5 min 20 s |
| 50 | 6.25 | 5.9605 | 2 min 40 s |
| 100 | 12.5 | 11.9209 | 1 min 20 s |
| 150 | 18.75 | 17.8814 | 53.3 s |
| 200 | 25 | 23.8419 | 40 s |
| 300 | 37.5 | 35.7628 | 26.7 s |
| 500 | 62.5 | 59.6046 | 16 s |
| 940 | 117.5 | 112.057 | 8.5 s |
Show all 15 rowsShow fewer
| 1,000 | 125 | 119.209 | 8 s |
| 2,000 | 250 | 238.419 | 4 s |
| 2,500 | 312.5 | 298.023 | 3.2 s |
| 5,000 | 625 | 596.046 | 1.6 s |
| 10,000 | 1,250 | 1,192.09 | 0.8 s |
Frequently Asked Questions
Is 100 Mbps fast?
100 Mbps is at most 12.5 MB/s, enough to download a 1 GB file in about 80 seconds in ideal conditions. Whether it is “fast” depends on how many people and devices share it.
Why does my 1 Gbps connection only download at about 110 MB/s?
1 Gbps divided by 8 is 125 MB/s before any overhead. Network headers and the link itself take a share, and many tools show MiB/s, where 125 MB/s is 119.21 MiB/s, so 110-something is a healthy result.
What is the difference between Mbps and MBps?
Mbps is megabits per second; MBps (or MB/s) is megabytes per second. One MB/s equals 8 Mbps.