Network diagnostic tool

Test your internet speed

Measure your connection's download speed, upload speed and responsiveness against a nearby internet edge location.

Live connection reading

Ready to test

Results are not saved by Comms Source Data use adapts to your connection

Connection results

Your performance at a glance

Download

—Mbps

Upload

—Mbps

Latency

—ms

Jitter

—ms

Download

How quickly data reaches you. Higher is better for streaming, downloads and cloud apps.

Upload

How quickly you send data. Important for video calls, backups and sharing large files.

Latency & jitter

Connection response time and consistency. Lower is better for calls and real-time apps.

Results are estimates between your browser and a nearby test server. Wi-Fi, device performance, VPNs and network traffic can affect the measurement.