Speed test — Cloudflare edge
Runs entirely from this browser tab against speed.cloudflare.com's public endpoints — the measurement infrastructure is Cloudflare's, the network path tested is yours.
Idle. Your ISP, IP and DNS are visible to Cloudflare like any request — no data is retained.
–Download Mbps
–Upload Mbps
–Latency ms
–Jitter ms
How to test like a network engineer
- Decide which hop you're testingThis page measures the path from THIS device → Cloudflare. Wi-Fi problems show only if you're on Wi-Fi right now. To isolate: run it beside the router, then in the problem room, then (if possible) over Ethernet — the deltas tell you where the loss lives.
- One variable at a timeClose other heavy tabs/app updates on the tested device; pause the 4K TV if you can. A household test measures everyone; a diagnostic test measures one thing.
- Run it three times and note the middleWi-Fi especially varies shot to shot; median beats memory.
- Compare latency/jitter to your plan's feelGaming and calls live or die on the ms/jitter row — a fast 'download' with a jittery 40 ms is a bad evening anyway.
What each number means
| Metric | What it is | Roughly good |
|---|---|---|
| Download | Peak inbound bytes/s from the nearest Cloudflare edge | ≥ plan speed is fine; ≥100 Mbps covers 4K for the whole family's couch |
| Upload | Peak outbound | ≥20 Mbps feels great on calls; upload is where cable plans often cheat you |
| Latency (ping) | One round-trip, this device → edge | <20 ms local play; <80 ms fine; >150 ms noticeable |
| Jitter | How steady the latency is | <10 ms; video calls compensate poorly above ~30 |
Wi-Fi numbers lower than your bill?Almost always correct behaviour, not a scam: the radio hop is shared and lossy. If Ethernet at the router delivers full plan speed, Wi-Fi (not the ISP) is the bottleneck — the planner and troubleshooting guides then own your next steps. Want the full-fat version with graph history? Open speed.cloudflare.com.
Verified sources & further reading
External links below were live-checked in September 2026. They back up the specific claims on this page; open them and judge for yourself.