100 Mbps to MB/s: how fast is it?

100 Mbps = 12.5 MB/s at the theoretical line rate.

Network speeds use bits per second while file-copy tools commonly show bytes per second. Divide Mbps by 8 to get MB/s.

Why is real speed lower?

Protocol overhead, storage performance, Wi-Fi, latency and competing traffic reduce application throughput.

Compare 500 Mbps, 1 Gbps, or read Mbps vs MB/s explained.