Internet Speed Test

Check your download, upload, and ping speed directly from your browser.

What this does & when to use it

Measures download, upload, latency and jitter against Cloudflare’s edge network — entirely from your browser, with no third-party server. Useful for troubleshooting slow connections or comparing networks. The full test takes about 30–45 seconds.

Press Start test to begin. The test runs entirely in your browser and takes about half a minute.

Learn more

Background on the concepts this tool uses.

The test is powered by @cloudflare/speedtest which makes a series of HTTP transfers to speed.cloudflare.com and times them. Latency is the round-trip ping under no load, jitter is the variation between samples, and the loaded latency figures show how much your latency degrades while the link is saturated — a key indicator of bufferbloat.