• Shopping Cart
  • Contact Us
  • Select a Location
    Select a Location

    Current Location:

    Let us know the location you'd like to browse.

  • View Cart


Having problems with your Internet Connection? Did you know that most Internet connectivity issues can be solved by using our Modem Reset tool? Just sign-in, click the Reset button, and get back browsing the Web. >> Reset My Modem

Back Print Article

Cox Internet Speed Test Tool

Last Updated: Mon, 12 Sep 2016 > Related Articles

326 rated this


Learn to access and run a speed test that measures latency, download, and upload speeds on the Cox network.


Speed Test Overview

A Speed Test is a tool you can use to help understand your Internet performance. Most speed tests demonstrate how long it takes to download and upload data across many elements of the connection, including the Cox network, the public Internet, the network the speed test service is using, and your home network. In addition to download and upload speeds, some speed tests also include ping, latency, jitter, and packet loss. Running a speed tests can be useful as an estimate of quality of your Internet connection.  

Where Should You Run A Speed Test From?

The location of the speed test server is also important, not just how far it is from you but the path from the Cox network to the selected server.

Third party speed tests conducted off of the Cox network may not provide the most accurate representation of the performance of the Cox network. The results from some third party speed tests are more reliable than others and reliability can vary from location to location.  The speed test infrastructure is made up of hardware, software and network capacity, which can vary for a single provider.

To understand performance of the Cox network, we recommend using the Internet Speed Check Tool available in Internet Tools from My Account, which is available to Account Holders and Authorized Users. The Cox Internet Speed Test Tool eliminates many factors outside of Cox’s control and provides better insight into the performance of Cox’s network. 


  • It is recommended to run the speed test from a hardwire connection to the modem to help determine where potential issues exist.  
  • Hardwiring to the modem will provide a better view of the Cox network, while a wireless test is also subject to the conditions of your home network.
  • When you run a speed test via Internet Tools, you will have access to your previous test results. Your test results will also be available to Cox for troubleshooting and analysis.  

What Can Impact Your Speed? 

Regardless of the speed test site that you use, many things can impact speed test results which include the following. 

  • The Speed Test Infrastructure
  • Modem Capabilities
  • Device Type Capabilities (Laptop, Tablet, etc.)
  • Operating System
  • Browser
  • Security Configurations
  • Home Network - including WiFi


About the Internet Speed Check Tool

The Internet Speed Check tool provides a speed test that measures downloads, uploads, and latency on the Cox network. The tool is designed to test speeds when connected to the Cox network. Although the Speed Check tool works off the Cox network, the results aren't indicative of Cox network speeds and should be avoided.

speed check tool

Internet Speed Check is accessible through Internet Tools and is available to all Account Holders and Authorized Users. 

Understanding Results

Users of the Internet Speed Check tool obtain different results based on their package of Cox High Speed Internet service, the type of Internet device or computer running the test, the network equipment such as a cable modem, router, or switch, and the type of connection, wired or wireless, that is used.

Because the Internet Speed Check tool can also be used off the Cox network while using a 3G, 4G, or HotSpot connection, the location of where the test runs can also impact the results.

Refer to Speeds and Data Plans Information for additional details.

Use the following steps to access and run the Internet Speed Check tool. Before running the tool, it is important to note that the Internet Speed Check tool is designed to be used when connected to the Cox network.

The Internet Speed Check tool is not compatible with any iDevice, including iPad, iPhone, or iTouch.

To learn about your Internet package speeds, limits, and allowances, refer to Speeds and Data Plans Information.

In a web browser, go to www.cox.com/internettools.
Enter your User ID and Password, then click Sign In.

internet tools login

Note: If you do not remember your password, click the Forgot User ID / Password? link.
Under My Account located on the left navigation bar, click Internet Speed Check.

internet speed check link
On the Check Your Internet Speed page, click Check Speed to begin the speed test.

highlights Check Speed button

Result: Once completed, Your Results display at the bottom of the page. You can also view 25 of your most recent speed test results, click View past results.  

Note: Click What do these measurements mean? to learn additional information about your results.

Speed Test Results 

When running a speed test, keep in mind that many things can impact results.The items below are not exhaustive and the rapid evolution of technologies continue to introduce items that can impact performance.

If the test is run over WiFi, congestion of the in-home network and WiFi capabilities of both the modem or router and device can impact the results.For the most accurate results, run the speed test using a hardwired connection to the modem or router and ensure that no other device is actively using the Internet.

 Based on the...Use these tips to improve your speed...

The capabilities of the modem can impact your results. For the most accurate results, ensure  the following.

  • The modem or router meets the minimum requirements for your tier of service.
  • Upgrading to a modem that bonds more channels can help improve performance.
  •  Newer model modem can better leverage available network capacity.
Age of Your Device


The age and capabilities of the device from which the test is run can impact the results.

  • To determine if the device is impacting speeds, it is recommended to run the speed test from more than one device.
  • For tiers above 100 Mbps, the device must have a 1000 Mbps (1 Gbps) Network Interface Card (NIC), also referred to as a 1 Gig Ethernet Port, to realize hardwired speeds. The prior version limits the connection to 100 Mbps.
Computer and Operating System
  • Verify that the operating system on the device is up to date. For Windows devices, it should be Vista or newer.
  • Use Internet Explorer, Safari or Firefox and verify that you the latest version.Close open windows/tabs
  • Evaluate the processor speed, memory (RAM), and hard disk space, which can impact overall performance and speeds.
  • Delete cookies and temporary Internet files.
  • Uninstall programs that are no longer needed.
  • Disable or uninstall auto-start programs that are no longer used.
  • Turn off browser add-ons and programs running in the background


Additional Considerations 

  • Verify that the Ethernet cable is in good condition (no cuts) and is securely connected to both the  modem and the device.
  • Scan for viruses, spyware, and other malware.
  • Be aware that firewall software such as McAfee and Symantec can cause incorrect results. This is more likely if you have more than one firewall enabled on a device.
  • Turn off file sharing applications like BitTorrent
  • Turn off proxy services like VPN
  • Check number of simultaneously connected devices. Remember some devices can access the Internet even if you aren’t using them. For example, phones and tablets can be set to automatically download updates.

If You Cannot Run A Speed Test

If you cannot run a wired speed test, in addition to the above complete the following. 

  • Verify that the device is connected to your WiFi network.
  • Run the speed test while in close proximity to the modem or router.This will help to eliminate obstacles (such as walls, kitchen appliances and other radio signals) that can impact the WiFi signal.
  • Check the WiFi capabilities of both the modem and the device from which the speed test will be run.
  • Ensure that no other devices are connected to your WiFi network. The WiFi connection will be based on the lowest capability of the any device on the network
  • If using an 802.11ac capable modem and device, switch to the 5 GHz channel. Most devices connect the 2.4 GHz channel, which is used by many devices (microwave oven, baby monitors, wireless phones, Bluetooth devices, etc.) and can be more congested.

Additional Impacts to Service

Unfortunately, things outside of your and Cox’s control can also impact performance.The sites / services that you use also play a role.

  • The infrastructure for the website/application may not be able to support the speeds that you have.This is more likely to be noticeable for Ultimate and Gigablast customers.
  • The website / application may not have capacity to support the number of simultaneous users.
    • A site may not have enough capacity to support all users during peak usage times.
    • A site may not have enough capacity if it experiences a sudden influx of users if something “goes viral.”
  • The same way you purchase Internet service from Cox, the website /application purchases Internet access from a provider and may not have the right service to meet their needs.

To learn about your Internet package speeds, limits, and allowances, refer to Speeds and Data Plans Information.

Rate this Article:

Related Topics:

Give us your feedback:


Maximum 500 characters

Back Print Article