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Networks & service capacity calculators
Calculate throughput, transmission delay and simple availability or load budgets.
Choose the right calculation
Bits and bytes differ by eight. Average request rate can hide peaks and concurrency. A packet’s serialization delay is only one part of end-to-end network latency.
Find a tool for your question
Required Bandwidth Calculator
Estimate aggregate link capacity for concurrent streams at a chosen utilisation ceiling.
Network Throughput Calculator
Find average data throughput from decimal megabytes and elapsed time.
Packet Serialization Delay Calculator
Estimate time to transmit a packet’s bits onto a link.
Availability Downtime Calculator
Translate an availability percentage into downtime over a chosen period.
Requests Per Second Calculator
Calculate average request rate over a measurement window.
Little Law Concurrency Calculator
Estimate average items in a stable system from arrival rate and average time.
Bandwidth Delay Product Calculator
Estimate data in flight needed to fill a link across an entered round-trip delay.
TCP Window Throughput Calculator
Estimate a simple transport window and RTT throughput ceiling.
Network Utilisation Calculator
Compare measured traffic with an entered nominal link capacity.
Download Speed Required Calculator
Find the sustained payload speed required to download a file within a target time.
Upload Time Calculator
Estimate the time required to upload a decimal-megabyte file.
IPv4 Address Count Calculator
Find the full address count represented by an IPv4 prefix.
IPv4 Conventional Usable Hosts Calculator
Count traditional usable host addresses after reserving network and broadcast addresses.
Equal Subnet Count Calculator
Count equal subnets created by extending a network prefix.
Signal to Noise Ratio Calculator
Compare signal power with noise power as a decibel ratio.
Shannon Channel Capacity Calculator
Estimate the Shannon capacity bound for a bandwidth and linear SNR assumption.
Does serialization delay equal network latency?
No. Propagation, queuing, processing, framing and other paths can add to total latency.
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