Mbps to MB/s Converter
Enter an internet or link speed in Mbps and read the download rate in MB/s as you type. Use the SI box if you want to divide by exactly 8.
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Created by the Reeliy Editorial Team. Last updated: Oct 19, 2026
How many MB/s are in one Mbps?
Since a byte is eight bits, one megabit per second is 0.125 megabytes per second in SI terms, and 8 Mbps equals 1 MB/s. The converter's default is a little different: it counts a megabyte as 1,048,576 bytes, as file managers do, but a megabit as 1,000,000 bits, as network gear does. So 8 Mbps = 0.9537 MB/s. Ticking Use SI standard makes both decimal and returns the clean divisor of 8.
SI: MB/s = Mbps ÷ 8
default: MB/s = Mbps ÷ 8 ÷ 1.048576 = Mbps ÷ 8.388608
Difference between Mbps and MB/s
Mbps counts megabits that cross a link each second. It is how internet providers, Wi-Fi standards and streaming services describe speed. MB/s counts megabytes per second, which is what a browser, a file-copy window or a disk benchmark shows. Because a megabyte contains eight megabits, the MB/s figure is always the smaller number for the same speed.
That is the main reason a "100 Mbps" connection seems to deliver only around 12 MB/s. Nothing is missing; the two units are simply counting in different sizes.
How to convert Mbps to MB/s
- Enter the speed in megabits per second.
- Leave Use SI standard clear to divide by 8.388608, or tick it to divide by 8.
- Read the speed in megabytes per second.
The result is rounded to four decimal places and shown without thousands separators. It is a theoretical ceiling: real transfers are slower because of protocol overhead and congestion.
Example: a 700 MB download on a 100 Mbps line
In SI counting, 100 ÷ 8 = 12.5 MB/s, so a 700 MB file needs 700 ÷ 12.5 = 56 seconds. With the default binary megabyte, 100 ÷ 8.388608 = 11.920928955, shown as 11.9209 MB/s, and the same 700 MB file (now 734,003,200 bytes) needs about 58.7 seconds. The 2.7-second gap is the cost of mixing the two definitions of a megabyte, which is why the setting matters when you need an exact figure.
Mbps to MB/s conversion table
| Megabits per second (Mbps) | MB/s, default (÷ 8.388608) | MB/s, SI (÷ 8) |
|---|---|---|
| 1 | 0.1192 | 0.125 |
| 8 | 0.9537 | 1 |
| 25 | 2.9802 | 3.125 |
| 50 | 5.9605 | 6.25 |
| 100 | 11.9209 | 12.5 |
| 200 | 23.8419 | 25 |
| 300 | 35.7628 | 37.5 |
| 500 | 59.6046 | 62.5 |
| 1,000 | 119.2093 | 125 |
| 2,500 | 298.0232 | 312.5 |
Common mistakes
- Expecting a 100 Mbps plan to download at 100 MB/s. The ceiling is closer to 12 MB/s, and in practice a little lower.
- Using the default factor with decimal sources. If both figures come from decimal definitions, tick the SI box; otherwise the answer will be about 4.6% too small.
- Forgetting that speeds fluctuate. The converter turns a rated speed into a rated rate. It cannot account for Wi-Fi quality, server load or throttling.
For the opposite direction use the MB to Mbps converter. To estimate the time a particular file will take, use the download time calculator, and for faster links see the Gbps to Mbps converter.
Frequently asked questions
How many MB/s is 100 Mbps?
In SI terms 100 ÷ 8 = 12.5 MB/s. With the default binary megabyte the result is about 11.9209 MB/s.
Why is my download speed lower than my Mbps plan divided by 8?
The division gives a ceiling. Protocol overhead, Wi-Fi conditions, server limits and network congestion usually keep real downloads below it.
What does Use SI standard change?
It counts a megabyte as 1,000,000 bytes instead of 1,048,576, so the divisor becomes exactly 8 instead of 8.388608.
Is MBps the same as Mbps?
No. MBps (or MB/s) is megabytes per second and Mbps is megabits per second. The first is about eight times bigger per unit.
References
Cite this converter and page
If you use this page in your work, you can cite it as:
Reeliy Editorial Team. (2026). Mbps to MB/s Converter. Reeliy. https://reeliy.com/converters/convert-mbps-to-mb“Mbps to MB/s Converter.” Reeliy, 2026, https://reeliy.com/converters/convert-mbps-to-mb.