Mbps to MB/s converter and table (100 Mbps = 12.5 MB/s)

Formula

1 byte = 8 bits. The conversion is approximately MB/s = Mbps ÷ 8. A 100 Mbps connection theoretically supports 12.5 MB/s.

Real transfers may be slower because of protocol overhead, wireless conditions, congestion and remote-server limits.

Mbps to MB/s conversion table

Common plan speeds and the theoretical transfer time at full speed. In practice expect 5–15% less because of protocol overhead, and often much less over Wi‑Fi.

Speed	MB/s (theoretical)	1 GB file	4 GB movie	50 GB game
10 Mbps	1.25 MB/s	13 min	53 min	11 h 7 min
20 Mbps	2.5 MB/s	7 min	27 min	5 h 33 min
30 Mbps	3.75 MB/s	4 min	18 min	3 h 42 min
50 Mbps	6.25 MB/s	3 min	11 min	2 h 13 min
100 Mbps	12.5 MB/s	1 min	5 min	1 h 7 min
150 Mbps	18.75 MB/s	53 s	4 min	44 min
200 Mbps	25 MB/s	40 s	3 min	33 min
300 Mbps	37.5 MB/s	27 s	2 min	22 min
500 Mbps	62.5 MB/s	16 s	1 min	13 min
1,000 Mbps	125 MB/s	8 s	32 s	7 min
2,500 Mbps	312.5 MB/s	3 s	13 s	3 min
10,000 Mbps	1,250 MB/s	1 s	3 s	40 s

Not sure what speed you actually get? Measure it with the internet speed test.

Frequently asked questions

How do I convert Mbps to MB/s?

Divide Mbps by 8. For example, 100 Mbps is theoretically 12.5 MB/s, 500 Mbps is about 62.5 MB/s, and 1,000 Mbps is about 125 MB/s.

Why is my actual download slower than the calculation?

The conversion gives a mathematical maximum. Real speed is affected by protocol overhead, Wi-Fi, congestion, server capacity, disk speed and other limits.

Are MB/s and Mbps the same unit?

No. Lowercase b means bit and uppercase B means byte. One byte is eight bits, so the number in MB/s is about eight times smaller than the same rate in Mbps.

Can I calculate from MB/s back to Mbps?

Yes. Change either field: MB/s is multiplied by 8, while Mbps is divided by 8.

Mbps ↔ MB/s calculator

Formula

Mbps to MB/s conversion table

Frequently asked questions

Next steps