Calculating Maximum Theoretical Throughput of a TCP connection from Window and RTT

Published: 2018-01-10 13:21:55 +0000
Categories: Misc,




Using the TCP window size and Round Trip Time (RTT), it's possible to calculate the maximum possible throughput of a given connection. Realistically, the actual throughput will usually be much lower than this figure


tcp-window-size (bits) / Latency (seconds) = Bits-per-second

Usage Example

50KB Window, 15ms RTT

50 * 8 * 1000 = 400000
400000 / 0.015 = 26666666.666666667 bits per second = 26.6667 Megabits


TCP, connection, throughput, bandwidth, calculate, RTT, Round-trip, latency,

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