How to test your home wifi speed accurately
If your internet feels slow, a speed test is the first diagnostic — but only if you run it correctly. This guide covers the right way to test your home wifi and what each number actually tells you.
Test on Ethernet first
Wifi is the most common bottleneck in a home network. To know what your ISP is actually delivering, plug a laptop directly into your modem or router with an Ethernet cable and run the test there. This isolates the wifi variable.
If your wired test shows full speed but wifi is slow, the problem is your wifi network, not your ISP — typically resolved by upgrading to Wi-Fi 6/6E hardware, repositioning the router, or adding a mesh node.
Run the test multiple times across the day
Run a test at 8am, noon, 7pm, and 10pm. Network congestion (especially on cable) typically peaks between 7-10pm when your neighborhood is streaming. A big drop during peak hours points to oversubscription on your provider's side.
What each metric means
Download. How fast data flows to your home. Affects streaming, browsing, downloads.
Upload. How fast data flows out of your home. Affects video calls, cloud backups, file sharing, and smart cameras.
Ping (latency). The round-trip time to a test server, in milliseconds. Lower is better. Above 50 ms feels sluggish in real-time games.
Jitter. Variation in latency between consecutive packets. Above 30 ms causes choppy video calls and lag spikes in games.