Internet Speed Metrics: The Difference Between Mbps and MB/s

Understanding the distinction between Megabits per second (Mbps) and Megabytes per second (MB/s) is essential for interpreting internet speeds and file sizes. The primary difference lies in the scale: a single byte consists of eight bits.

Mbps is the standard metric used by internet service providers to measure network data transfer rates, such as streaming or webpage loading speeds. In contrast, MB/s is typically used to measure file sizes and storage capacity. To convert between the two, one must divide the megabits by eight to find the megabytes, or multiply megabytes by eight to find megabits.

In the United States, the Federal Communications Commission (FCC) defines broadband as providing at least 100 Mbps for downloads and 20 Mbps for uploads. Data from August 2026 indicated that the median US household experienced download speeds of 307 Mbps and upload speeds of 63 Mbps.