Test your Cox connection speed below
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This test measures the connection to your current device, not the speed delivered directly to your gateway or modem.
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This free Cox speed test measures your Cox Communications internet connection — download speed, upload speed, ping, and jitter — in under a minute, using the nearest Measurement Lab server.
Cox plans range from 100 Mbps to 2,000 Mbps (2 Gig) in select areas. Note that most Cox plans include a monthly data allowance (typically 1.25 TB); exceeding it does not slow your speed test, but it can lead to overage charges.
Cox Internet plans include 100 Mbps, 250 Mbps, 500 Mbps, 1 Gig, and 2 Gig tiers. Expect results roughly 10–20% below the advertised “up to” speed on a good wired connection.
Cox upload speeds are asymmetric on cable plans — commonly 10–35 Mbps. Cox fiber-to-the-home areas offer faster uploads.
Start with a modem restart and a wired speed test to see what Cox is actually delivering to your home. If wired speeds are low during evenings only, peak congestion is likely.
Cox’s Panoramic Wifi gateways work best placed centrally and elevated. For homes over 2,000 sq ft, add pods or a mesh system rather than relying on a single gateway.
For the most accurate result, connect your computer directly to your router with an Ethernet cable if possible. If you must use Wi-Fi, stand close to the router and disconnect other devices during the test.
Close streaming apps, cloud backups, and other browser tabs before clicking Start. Run the test 2–3 times at different times of day — speeds often dip during evening peak hours (7–11 PM) when many households are online.
Download speed (Mbps) controls how fast you can stream, browse, and download files. Upload speed (Mbps) affects video calls, live streaming, and cloud backups. Ping (ms) measures responsiveness — under 50 ms is good for gaming and calls. Jitter (ms) measures consistency — lower is better, especially for voice and video.
Compare your download result to your plan’s advertised speed. Most providers advertise “up to” speeds, so a result within about 20% of the advertised rate is normal.
Within about 20% of your plan’s advertised download speed is healthy. Uploads of 10–35 Mbps are normal on Cox cable plans.