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What Is the Relationship Between Bandwidth and Upload/Download Rate?

The bandwidth unit is bit/s, which is the number of binary bits transmitted per second. The unit of the download rate is byte/s, which is the number of bytes transmitted per second.

1 byte = 8 bits, that is, download rate = bandwidth/8

If the bandwidth is 1 Mbit/s, the actual upload or download rate is generally lower than 125 kByte/s (1 Mbit/s = 1,000 Kbit/s, upload or download rate = 1,000/8 = 125 kByte/s) in consideration of losses, such as computer performance, network device quality, resource usage, and network peak hours.