What is the average Xfinity (Comcast) speed?

Based on 1,540 verified speed measurements from Xfinity (Comcast) customers, the average download speed is 356 Mbps, upload is 79 Mbps, and ping is 33 ms.

How do I run a Xfinity (Comcast) speed test?

Click the 'Run Speed Test' button on this page. The test takes under a minute and works on any device. Your result will be compared to the Xfinity (Comcast) average.

Is my Xfinity (Comcast) connection slower than average?

Run the speed test above and compare your result to the Xfinity (Comcast) average of 356 Mbps download. If your speed is significantly lower (more than 30% below average), contact Xfinity (Comcast) support to troubleshoot.

Xfinity (Comcast) Speed Test

Real average speeds in United States based on 1,540 verified measurements.

Fast

Avg Download

356

Mbps

Avg Upload

Mbps

Avg Ping

Measurements

1,540

real users

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Xfinity (Comcast) vs Other United States ISPs

How Xfinity (Comcast) compares to competing ISPs in United States.

Frontier 181 tests

Avg Download 415 Mbps +59 Mbps faster Compare →

Google Fiber 92 tests

Avg Download 411 Mbps +55 Mbps faster Compare →

Optimum 185 tests

Avg Download 387 Mbps +31 Mbps faster Compare →

Cox 335 tests

Avg Download 345 Mbps -11 Mbps slower Compare →

Spectrum (Charter) 1,797 tests

Avg Download 337 Mbps -19 Mbps slower Compare →

About Xfinity (Comcast) Speed Test Data

The average Xfinity (Comcast) download speed is 356 Mbps, based on 1,540 real speed tests run by Xfinity (Comcast) customers. The fastest recorded speed was 2399 Mbps, and the best ping was 4 ms.

Speeds vary widely based on your specific plan, location, time of day, and whether you're connected via ethernet or Wi-Fi. If your result is significantly below the average, try restarting your router, switching to ethernet, or contact Xfinity (Comcast) support.

These statistics are updated continuously as Xfinity (Comcast) customers run speed tests on InternetSpeedTest.net. Click "Run Speed Test" to measure your Xfinity (Comcast) connection and contribute to the data.

All ISPs United States Speed Index Monthly Speed Report Speed Test Tool