Internet Speed Test
Measure your download and upload speed directly in the browser.
Browser-based HTTP speed test against Cloudflare’s servers. Results may vary from real-world speeds.
Measure your real download speed, upload speed, and ping latency directly in the browser using Cloudflare's edge network — no plugins, no Java, no Flash required.
Key Features
Download Speed
Fetches multiple file sizes from Cloudflare edge servers and takes the median throughput, giving a stable and realistic reading.
Upload Speed
Posts random data to a Cloudflare endpoint and measures actual upload throughput at your connection's edge.
Ping / Latency
Measures round-trip latency with 5 back-to-back HEAD requests and reports the median ping in milliseconds.
Test History
Keeps the last 5 test results in the session so you can compare speeds across times of day or network changes.
Abort Anytime
A Stop button immediately aborts the current test sequence without leaving partial state.
No Installation
Runs entirely in your browser tab. No extensions, plugins, or desktop apps needed.
How to Use
- 1Click Start Speed Test to begin the measurement sequence.
- 2The test first measures ping (5 HEAD requests), then download (progressive file sizes), then upload.
- 3Results update live as each phase completes.
- 4Click Stop at any time to abort the test.
- 5Previous results appear in the history table below the gauges.