How this calculator works
Enter bandwidth (mbps), round-trip latency (ms). CalcStack applies the displayed formula and reports each intermediate planning value with the units shown.
Formula / method
BDP bytes = bandwidth bits/s × round-trip seconds ÷ 8
Worked example
1 Gbps with 40 ms round-trip latency has a 5 MB bandwidth-delay product.
Assumptions and limitations
Bandwidth is sustained and latency is round-trip time.
TCP congestion control, loss, receiver windows, protocol overhead and variable latency are not modeled.