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100 Mbps and 100 MB/s are different: How to read internet speed units

Internet plan speeds and real-world file download speeds can look different because Mbps and MB/s are not the same unit. Mbps refers to megabits per second, while MB/s refers to megabytes per second, and 1 byte equals 8 bits. That means 1 MB/s equals 8 Mbps, with lowercase b indicating bits and uppercase B indicating bytes. Mbps is used for line speeds, while MB/s is commonly used for file transfers.