Units
What is the difference between Mbps and MB/s?
8Mbps = 1 MB/s
Mbps is megabits per second; MB/s is megabytes per second, eight times bigger.
A small b means bits, a capital B means bytes, and one byte is eight bits. Internet plans quote megabits per second; download windows show megabytes per second.
The arithmetic
- 1 byte = 8 bits
- 1 MB/s = 1,000,000 bytes/s × 8 = 8,000,000 bits/s = 8 Mbps
- So 100 Mbps ÷ 8 = 12.5 MB/s, before overhead
| Plan speed | Top speed in MB/s | After TCP/IP overhead | In MiB/s |
|---|---|---|---|
| 10 Mbps | 1.25 MB/s | 1.19 MB/s | 1.19 MiB/s |
| 25 Mbps | 3.12 MB/s | 2.97 MB/s | 2.98 MiB/s |
| 50 Mbps | 6.25 MB/s | 5.93 MB/s | 5.96 MiB/s |
| 100 Mbps | 12.5 MB/s | 11.9 MB/s | 11.9 MiB/s |
| 300 Mbps | 37.5 MB/s | 35.6 MB/s | 35.8 MiB/s |
| 500 Mbps | 62.5 MB/s | 59.3 MB/s | 59.6 MiB/s |
| 1,000 Mbps | 125 MB/s | 119 MB/s | 119 MiB/s |
| 2,000 Mbps | 250 MB/s | 237 MB/s | 238 MiB/s |