TCP Throughput

TCP Throughput Calculator

Calculate the maximum theoretical TCP throughput based on TCP window size and network latency.

TCP Window Size (Bytes):

Network Latency (Seconds):

Example values: Default window size is 65,536 bytes (64 KB). Latency of 0.01 seconds = 10ms round-trip time.

📊 Calculation Results

Maximum Throughput (bps):

Maximum Throughput (Mbps):

Maximum Throughput (Gbps):

About TCP Throughput

TCP throughput is limited by the TCP window size and network latency. The theoretical maximum throughput can be calculated using the formula below:

Throughput (bps) = (TCP Window Size in Bytes × 8) / Latency in Seconds

TCP Window Size: The amount of data that can be sent before requiring an acknowledgment from the receiver. Larger windows allow more data in flight, improving throughput on high-latency links.

Latency: The round-trip time (RTT) between sender and receiver. Higher latency reduces throughput for a given window size.

Note: This calculation represents the theoretical maximum. Actual throughput may be lower due to packet loss, congestion, processing delays, and protocol overhead.