Internet Speed Test for All Devices

Measure download, upload, latency, and jitter with real-world accuracy, right from your browser, on 130+ servers worldwide.

> Test my internet speed

Running SpeedOf.Me speed test…

↓ 412 Mbps ↑ 38 Mbps 12 ms ping

Speed Test Your Connection from AI Agents

The SpeedOf.Me MCP Server brings speed testing to Claude, Cursor, and other AI platforms. Get download, upload, latency, and jitter - right from your AI workflow.

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Stop Building Speed Tests From Scratch

Our API handles the infrastructure. You get accurate download, upload, latency, and jitter data, plus over 130 global test servers and a real-time analytics dashboard.

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What Is a Good Internet Speed?

25 Mbps streams 4K; 100 Mbps suits a busy home. See what a good speed is, test your Wi-Fi or mobile data, or find out why your internet is slow.

Every test draws a real-time internet speed graph, and your history tracks download, upload, and latency trends over time
- no account required.

What a Speed Test Measures

A speed test checks four things about your internet connection. Download speed is how fast data reaches your device, and it shapes streaming, browsing, and file downloads. Upload speed is how fast you send data out, which matters for video calls, cloud backups, and posting large files. Latency (also called ping) is the delay before data starts moving, measured in milliseconds, and jitter is how much that delay varies from moment to moment. Fast download and upload numbers make everything feel quick, while steady, low latency and jitter keep video calls and games smooth. Unsure about a term? See the short internet speed glossary.

What Is a Good Internet Speed?

A good internet speed depends on how many people and devices share the connection. These figures are a practical starting point for most homes:

Speed

Good for

25 Mbps

HD and 4K streaming on one device.

100 Mbps

A busy household, several devices at once.

300 Mbps

Heavy 4K, gaming, and video calls together.

1 Gbps

Large downloads and many heavy users.

How to Read Your Speed Test Results

Higher download and upload numbers are better, and lower latency and jitter are better. Test a few times at different hours, because busy evening networks are slower than quiet mornings. If Wi-Fi results look low, run the Wi-Fi speed test next to your router: a big jump means the wireless link, not your line, is the bottleneck. On a phone, compare Wi-Fi with the mobile data speed test over 4G or 5G to see which is faster where you are. For the steadiest baseline, test on a wired connection with other downloads paused.

Speed Test FAQ

Why is my speed lower than my plan?

Providers advertise a maximum, but real speed drops with Wi-Fi range, older routers, network congestion, and the number of devices sharing the line. Testing wired, close to the router, shows the speed your line actually delivers.

Why do results differ between speed tests?

Different tests use different servers, connection counts, and averaging methods. SpeedOf.Me measures with single-stream downloads in your browser, which reflects how real apps behave. See what makes a speed test accurate.

What is the difference between Mbps and MB/s?

Mbps means megabits per second and measures connection speed, while MB/s means megabytes per second and measures file size. There are 8 bits in a byte, so a 100 Mbps connection downloads about 12.5 megabytes per second.