Bandwidth Delay Product Calculator

Find the bandwidth-delay product of a link.

Bandwidth-delay product (KB) 488.28

In bits (bits) 4,000,000

Formula: BDP = bandwidth * RTT

Step-by-step with your numbers:

1. Values used:

2. Bandwidth = 100 Mbps

3. Round-trip time = 40 ms

5. Bandwidth-delay product = 488.28KB

6. In bits = 4,000,000bits

Did we solve your problem today?

The bandwidth-delay product is how much data can be 'in flight' on a link.

The math behind it

BDP = bandwidth x round-trip time. It sets the ideal TCP window size for full throughput.

100 Mbps with 40 ms RTT gives about 488 KB.

Why does it matter?

If the TCP window is smaller than the BDP, you can't fill the pipe.