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Your Public IP
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Internet Speed Test
Download, upload, ping and jitter measured from your browser using parallel streams.
Ready to test
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Standard mode runs for up to 8 seconds each way with byte limits of 500 MB down and 150 MB up. Light mode uses 40 MB down and 20 MB up; concurrent requests can add some overhead. Use light mode on metered data.
Real DNS Benchmark
Compare public resolvers using real DNS-over-HTTPS (DoH) queries from your browser.
Times are the median of several queries on a warm HTTPS connection, and the ranking blends cached (40%) and uncached (60%) speed. “Cached” is a name the resolver already knows; “uncached” forces a fresh lookup. Browsers cannot send plain UDP DNS, so numbers include HTTPS overhead and your ISP’s own DNS cannot be tested here. Use them to compare providers, not as exact figures.
Improve Privacy & DNS Security
A VPN encrypts your traffic, hides your IP from the sites you visit, and secures your data on public Wi-Fi.
Affiliate link – we may earn a commission at no extra cost to you.
Test History
Your last 25 results, stored only in this browser. Never uploaded.
No tests yet. Run a speed test and it will appear here.
| Time | Download | Upload | Ping | Jitter | Bloat |
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Wi-Fi Optimization Toolkit
Third-party tools can help inspect Wi-Fi coverage, channels and nearby interference. Results depend on your device and environment.
NetSpot
Professional Wi-Fi site surveys, analysis, and troubleshooting. Create heatmaps to find dead zones and interference.
Windows
macOS
Android
WiFi Analyzer
Identifies the best channel for your router by visualizing surrounding networks. Perfect for reducing channel overlap.
Windows 10/11
Android
Acrylic Wi-Fi
Advanced Wi-Fi scanner that displays information about 802.11ax/ac networks and security configurations.
Windows
Understanding Download vs. Upload Speed
Download speed refers to how fast your connection can pull data from the internet (watching Netflix, downloading files, browsing web pages).
Upload speed is the opposite: it's how fast you can send data out (posting to social media, sending emails, or video calling on Zoom).
Most home connections (DSL, Cable) are asymmetric, meaning download speeds are significantly higher than upload speeds. This is designed for typical consumers who consume more data than they create. Fiber optic connections often offer symmetric speeds.
How Our Speed Test Works
We first measure latency with a series of tiny requests on an already-open connection and report the median ping and the jitter (the average change between consecutive samples).
Download and upload run for a fixed time using several parallel connections, because a single connection often cannot fill a fast line. The first moments of each phase are discarded so TCP and TLS start-up do not drag the result down, and the reported speed is the sustained average after that.
Tests use Cloudflare’s global speed-test servers. Results depend on your device, Wi-Fi, browser and the distance to the nearest server, so they can differ from other speed tests.
We also measure latency while downloading and uploading (bufferbloat), estimate packet loss from timed-out probes, and add more parallel streams automatically on very fast lines.
Frequently Asked Questions
Common questions about speed testing and network optimization.
Why do results differ from other speed tests?
Every test uses different servers, numbers of connections and test durations. Browser-based tests are also limited by your device, Wi-Fi signal and any VPN or browser extensions. For the most comparable result, use a wired connection, close other downloads and run the test a few times.
Why is my internet slower than advertised?
Advertised speeds are typically maximums measured under specific conditions. Wi-Fi interference, router distance, device limits and network congestion can lower the speed you measure. Compare over Ethernet when possible, then test near the router to isolate Wi-Fi effects.
What is a good Ping (Latency) for gaming?
- Under 20 ms: Usually very responsive, depending on the game server route.
- 20-50 ms: Often comfortable for many games.
- 50-100 ms: Noticeable delay may affect fast-paced games.
- Over 100 ms: Delay is more likely to be noticeable.
Does changing DNS speed up internet?
No. A DNS resolver does not increase your connection bandwidth. A faster resolver may shorten the initial lookup before a site opens, but the difference depends on caching, routing, and the resolver. This browser test compares DNS-over-HTTPS response times from your current device; it does not measure every app or your ISP’s configured resolver.
What is the difference between Mbps and MB/s?
ISPs sell speeds in Megabits (Mbps), but file downloads are shown in Megabytes (MB/s). There are 8 bits in 1 byte. So, if you have a 100 Mbps connection, your maximum download rate is 12.5 MB/s.