WiFi Health Check
Measure latency, jitter, and connection stability — what browsers can actually test about your wireless link.
What your browser can see
Web browsers cannot scan Wi‑Fi networks or read signal strength. This check measures latency, jitter, stability, and a short throughput burst — the same experience your apps feel on this connection.
How to read your WiFi health score
The health score combines latency, jitter, and burst download into a single 0–100 rating. Each component gets its own grade so you can see exactly where your connection falls short.
Excellent
Gaming, 4K video calls, real-time collaboration — no perceptible lag.
Good
Streaming and video calls work reliably. Competitive gaming may show occasional hiccups.
Fair
Basic browsing and SD video are fine. HD calls and gaming may feel inconsistent.
Poor
Expect buffering, choppy calls, and lag. Troubleshoot Wi-Fi or switch to ethernet.
WiFi health vs speed test — what's the difference?
A speed test measures raw throughput — how much data you can move in a given time. WiFi health measures stability — how consistent your connection is under real-world conditions. Both matter:
Speed test tells you
- Maximum download and upload in Mbps
- Whether you're getting your plan's advertised speed
- Bufferbloat grade under heavy load
WiFi health check tells you
- Latency and jitter stability over time
- Whether your connection is consistent enough for calls and gaming
- Packet loss that would cause call drops or game lag
A connection can measure 300 Mbps download but fail a WiFi health check due to high jitter from Wi-Fi interference. For video calls and gaming, the health score is often more predictive of real-world experience than raw Mbps.
Common causes of poor WiFi health
2.4 GHz channel congestion
Switch your device to the 5 GHz band. It's less crowded and has lower jitter in most homes.
Distance from router
Move closer to test best-case WiFi. Large gaps between near and far tests suggest you need a mesh system or access point.
Interference (microwave, Bluetooth)
Test with Bluetooth off. Microwave ovens disrupt 2.4 GHz; keep your router away from kitchen appliances.
Old or overloaded router
A router handling 15+ devices or running for years without a reboot can degrade stability. Reboot monthly and consider upgrading to Wi-Fi 6.
ISP-level issues
If ethernet also shows poor latency, the issue is upstream — contact your ISP or run a full speed test to check for packet loss.
VPN overhead
VPNs add 10–50 ms latency and increase jitter. Test with VPN off to isolate your base connection quality.
Related guides
Frequently Asked Questions
What does the WiFi health check measure?▾
SpeedIP's WiFi health check measures latency (ping), jitter (ping variation), packet loss, and a short download burst to assess connection stability. The result is a 0–100 health score with letter grades (A–F) for each metric.
What is a good WiFi health score?▾
Scores above 85 are excellent — low latency and stable jitter, suitable for gaming and video calls. 70–84 is good for everyday use. Below 50 suggests noticeable lag, drops, or interference that will affect real-time apps.
Can this page show my WiFi signal strength or network name?▾
No. Browsers block access to SSIDs, signal bars, RSSI, and noise levels for privacy. This tool measures latency, jitter, packet loss, and a short download burst — the performance dimensions that actually predict call quality and gaming lag.
How is this different from a speed test?▾
A speed test measures maximum download and upload over 12+ seconds. The WiFi health check focuses on stability — ping consistency, jitter, and spikes — which predict real-time app quality even when raw Mbps looks fine. A connection can test at 500 Mbps but still have poor WiFi health if jitter is high.
Why does it say cellular or ethernet instead of WiFi?▾
When available, your browser reports connection type via the Network Information API. On desktop Safari or some browsers the type may be unknown. Run the test on the device and network you want to evaluate.
How can I improve a poor WiFi health score?▾
Move closer to your router, switch to the 5 GHz band, reduce interference from neighboring networks and appliances, restart your router, or compare against an ethernet connection. If scores are poor only far from the router, consider a mesh system or additional access point.
What is jitter and why does it matter?▾
Jitter is the variation in ping over time. A stable connection has consistent ping; a high-jitter connection swings between fast and slow responses. Under 10 ms jitter is excellent; above 30 ms you'll hear choppy audio on calls and see stutter in online games — even if average ping looks acceptable.
What causes high jitter on WiFi?▾
Wi-Fi interference from neighboring networks (especially on the 2.4 GHz band), microwave ovens, cordless phones, Bluetooth devices, and thick walls all increase jitter. Channel congestion during peak hours is another common cause. Switching to 5 GHz or using ethernet usually lowers jitter significantly.