Results stay on your device — nothing is uploaded to us. (We don’t even have a server.)
| Phase | min | median | p90 | max |
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Your browser opens several parallel connections to the nearest Cloudflare datacenter — the same edge network in 300+ cities that many of your apps already use.
For about 20 seconds we stream data both ways, sampling your throughput ten times per second, while latency probes race the transfer to measure bufferbloat.
Everything runs in your browser. Your results are computed locally and never uploaded — this site doesn’t even have a server.
How fast data reaches you — streaming, browsing, downloads. Measured in megabits per second (Mbps).
How fast you send data — video calls, cloud backups, sharing files. Usually much lower than download on home plans.
How long one round trip to the server takes when the line is quiet. Under ~30 ms feels instant; it matters more than raw speed for many apps.
How much your latency varies from moment to moment. High jitter makes voices robotic and games unpredictable.
Your latency while the line is busy. If it balloons, calls stutter whenever someone downloads — a test many “fast” connections fail.
We translate the raw numbers into what they mean for streaming, calls and gaming — no networking degree required.
Ethernet is more stable and usually faster than Wi-Fi. Wire up your desk PC, TV or console if you can.
Place it high, central and in the open — away from metal, thick walls, fish tanks and microwave ovens.
The 5 GHz band is much faster than 2.4 GHz at short range. Stand near the router? Use 5 GHz. Far away? 2.4 GHz reaches further.
A monthly power-cycle clears memory leaks and stale sessions in home network gear more often than you’d think.
If your bufferbloat grade is C or worse, look for SQM / Smart Queue / fq_codel in your router settings — it can transform call quality.
Test wired, at different times of day. If you consistently get far less than you pay for, send your ISP the numbers.
The honest answer: far less than the ads suggest for one person — and more than you think for a busy household. Here are the real numbers.
In rough order of effort-to-payoff. Measure before and after each change — that is how you find the fix that matters on your line.
The most common speed problem is not your provider — it is the last ten meters. Here is why Wi-Fi eats your bandwidth and what actually fixes it.
Bandwidth is how much your connection can carry. Latency is how fast it responds. For everything interactive — clicks, calls, games — the second number is the one you feel.
Yes. No ads, no account, no app to install, no data sold. The site is a static page and the measurement runs against Cloudflare’s open network, so it costs almost nothing to operate.
For one person: 25 Mbps down is comfortable, 100+ Mbps is plenty. For a family that streams in 4K: 200–500 Mbps. For calls and gaming, latency matters more than speed — under 30 ms idle and a bufferbloat grade of A or B beats raw gigabit with bloated buffers.
Each test uses different servers, different numbers of parallel connections and different math to summarize samples. Differences of 10–20% between reputable tests are completely normal. Trends matter more than any single number.