Gbps Checker

The Gbps Checker estimates capacity in Gbps between a source and a target host by simulating controlled traffic flows. It is designed for IT teams, hosting operators, data-center engineers, and network performance practitioners who need fast, repeatable throughput benchmarks without specialized hardware. The tool helps quantify link capacity, compare changes (new NICs, switches, or cables), and validate network plans against observed throughput. It is free to use and suitable for pre-deployment checks and post-change validation.

Conceptually, the tool constructs synthetic traffic with multiple concurrent streams, using the chosen protocol (TCP/UDP) and duration. It measures data transferred over wall-clock time to compute throughput. Results include peak and sustained throughput, plus latency indicators when available. The approach favors reproducibility; by fixing parameters such as duration and concurrency, results can be compared across environments and over time.

Unique value lies in combining ease-of-use with actionable metrics: a direct Gbps readout, configurable concurrency, and region-aware tests to reflect routing variability. Use cases include validating uplink capacity after hardware upgrades, benchmarking inter-data-center links, and assisting capacity planning for peak traffic windows. The tool is free to use and does not require on-site measurement hardware.

Core features include target-host input, protocol choice, duration and thread controls, region option, and 3-decimal throughput formatting. Outputs show throughput_gbps, peak_gbps, sustained_gbps, latency_ms, and success_rate_percent. The tool emphasizes safety and clarity: results are presented with units, and any non-deterministic factors are reported as notes. Examples: a 10 Gbps link yields peak 10.000, sustained 9.720 Gbps under 32 threads for 60 seconds.