Real internet speed test
Measures your true download, upload, latency, and jitter against Cloudflare's global network — the same infrastructure that powers speed.cloudflare.com. Works on Spectrum, Xfinity, AT&T, T-Mobile, and any ISP.
Phase: idle
Download
0.0
Mbps
Upload
0.0
Mbps
Latency (median)
0
ms
Jitter
0.0
ms
Your ISP
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Test server
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Your IP
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Timestamp
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How the speed test works
The test downloads real payloads from Cloudflare's global edge network, uploads a randomly-generated buffer back, and measures the throughput in each direction. Latency is measured as the median of six small round-trips; jitter is the average difference between consecutive round-trips. Nothing is faked — every number comes from live HTTP requests.
What "good" Spectrum speed looks like
- Spectrum Internet (300 Mbps plan) — expect 250–350 Mbps down, 10–15 Mbps up.
- Spectrum Ultra (500 Mbps) — expect 400–550 Mbps down, 15–25 Mbps up.
- Spectrum Gig (940 Mbps) — expect 700–950 Mbps down, 30–40 Mbps up.
- Latency — under 30 ms is good, under 15 ms is excellent.