Internet Speed Test
Check your download speed, upload speed and TCP latency.
Internet Performance
Ready to test your internet
Accept the data policy and start your test.
Download Speed
Download
Download
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Mbps
Upload
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Mbps
TCP RTT
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ms
M-Lab Data Collection Notice
M-Lab collects your public IP address and test measurements. Results may be published for internet research.
Read M-Lab Privacy PolicyTesting usually takes around 20 seconds. Keep this page open.
Understanding Your Speed Test
Download Speed
Measures how quickly your device receives data from an M-Lab test server. Higher download speeds help with streaming, browsing and downloading files.
Upload Speed
Measures how quickly your device sends test data to an M-Lab server. It is useful for video calls and file sharing.
TCP Minimum Round-Trip Time
Shows the minimum round-trip time reported by the TCP connection during the test. This is not a separate ICMP ping test. Lower values generally indicate a quicker response.
Frequently Asked Questions
Is this speed test free?
Yes. This tool uses the M-Lab NDT7 measurement infrastructure without requiring an account or API key.
Why can results differ from Speedtest.net?
M-Lab NDT7 uses a single TCP connection and a different server network and measurement method. Other speed tests may use multiple connections, so results can differ.
Does M-Lab collect my IP address?
Yes. M-Lab collects the public IP address associated with the test and publishes measurement data. Please read its privacy policy before accepting the test.
Does this test measure my exact ISP speed?
No internet speed test can guarantee an exact universal speed. This test measures performance between your device and the selected M-Lab server at that moment.
Powered by Measurement Lab NDT7. Results represent a single-connection measurement and may vary with network conditions and server location.