Speed Test
Spectrum Speed Test
Test your Spectrum connection (Cable) and see if your download, upload and ping match your plan.
Detected in your browser for this test only — never stored or shared.
About Spectrum speeds
Run a Spectrum speed test to verify your Charter Spectrum connection. Spectrum cable plans are marketed as "starting at" speeds with no contracts, but real-world performance depends on local node congestion, your modem and in-home WiFi.
Expected speeds: Spectrum plans commonly range from 300 Mbps to 1000 Mbps download, with upload around 10-35 Mbps on cable.
Spectrum speed test FAQ
Why is my Spectrum upload speed so slow?
Cable technology (DOCSIS) reserves most of the spectrum for download, so uploads of 10-35 Mbps are normal even on gigabit plans. Spectrum is rolling out hybrid-fiber upgrades in some areas that raise upload to 200+ Mbps.
Why does Spectrum slow down at night?
Cable internet is shared with your neighborhood. Between roughly 7pm and 11pm, more households online means more congestion at the local node. Run tests at different hours to see the pattern.
Does Spectrum throttle my internet?
Spectrum does not throttle by content under current rules, but congestion and deprioritization after heavy usage can feel like throttling. A wired speed test that matches your plan rules out ISP-side issues.
Want to understand your results? See what a good download speed is or learn about network jitter.