Network tools

Twelve tools, each doing one thing. Most measure; the converter and the DNS lookup do not, and both say so.

The full test: latency, download throughput and upload throughput, measured automatically against th…

A focused download-only test. It runs a sequence of real transfers, ignores the connection ramp-up a…

Upload is the direction most plans neglect. This test sends real payloads to the measurement edge an…

Twenty small requests, timed individually, charted live. You get the median, the spread and the 95th…

A short full test with guidance aimed at wireless problems: is your Wi-Fi link delivering what your …

Throughput tells you how fast the line can go. Stability tells you whether it stays usable. This mon…

Games care about consistency more than throughput. This test samples your line 25 times, counts the …

Bufferbloat is why a fast connection can still feel slow. This test measures latency while the line …

Forty probes, sent one after another, with every failure counted. This page is explicit about the di…

A short measurement checked against the four numbers that decide whether a video call works: downloa…

Bits and bytes differ by a factor of eight. Convert any speed instantly, and see how long a real fil…

Ask a public resolver what a domain actually points to. The records come back verbatim; the only thi…

Not sure which tool you need?

Start with the full speed test — it measures all four core numbers in one run. Then use the specialist tools to explain a specific symptom.