Test your internet speed

The internet speed test measures your connection's download speed, upload speed, and latency. The best internet connections have high download and upload speeds but low latency.

• Download speed is how fast information can transfer to you. It affects things like how long it takes to download large files or show pages with many pictures. Download speed is measured in megabits per second (Mbps). 
• Upload speed is how fast information can transfer from you. It affects things like how long it takes to post pictures to social media. Upload speed is measured in megabits per second (Mbps).
• Latency measures how quickly you get a response from the server. Low response times are important for real-time apps, like video calls and online gaming. Latency is measured in milliseconds (ms).

Note: Currently, the test can measure connection speeds up to 700 Mbps. If you have a connection speed over 700 Mbps, your results could be lower than your actual connection.

Why your test results could vary

Your test results can change in a short time, and they could differ from other internet speed test results. Results can vary for many reasons, like:

• Changes in network conditions
• Differences in where testing servers are located
• Differences in testing methods

Learn more about why your results from M-Lab can differ from other test results.