Measures the real-world download speed, upload speed, and latency between your device and our servers. No Flash, no ads, no tracking.
Notes: results are limited by your Wi-Fi, browser, and CDN routing, not just your ISP. The test uses up to ~25 MB of data per direction. Single connection — real download managers and modern browsers will often achieve higher speeds with parallel streams.
performance.now() for sub-millisecond accuracy.