This internet speed test tool is simple to use. Just click the "Start Test" button to quickly check your network performance. Here's a detailed guide:
After opening the tool page, click the "Start Test" button in the center. The tool will automatically run latency, download, and upload tests in sequence. The entire test takes about 20-40 seconds, so please be patient. Do not switch tabs or close the browser during testing, as this may affect results.
After testing completes, the page displays four key metrics: download speed, upload speed, latency, and jitter. Download and upload speeds are shown in Mbps (megabits per second) - higher values mean faster speeds. Latency is shown in milliseconds (ms) - lower values mean faster network response. Jitter shows latency variation - lower values mean a more stable network.
The "Network Information" section at the bottom shows browser-provided network status, including network type (WiFi/4G/5G), estimated downlink bandwidth, round-trip time (RTT), and more. This data comes from the browser's Network Information API and helps you quickly understand your current network environment.
Since network conditions change over time, a single test may not be fully accurate. We recommend running multiple tests at different times of day and averaging the results. Close other bandwidth-heavy applications (video streaming, file downloads) before testing for the most accurate results.
Internet speed testing tools have wide applications in daily life and work. Here are several typical use cases:
After installing new broadband or upgrading your plan, use this tool to verify whether actual speeds match what your ISP promised. If measured speeds are significantly lower than contracted bandwidth, you have data to support claims with your provider. When experiencing slow speeds, a quick test helps determine whether it's a network issue or a device/software problem.
With the rise of remote work and video conferencing, stable internet is essential. Before important video meetings or online presentations, test your network to ensure download and upload speeds are sufficient (video conferencing typically requires at least 2Mbps upload and 5Mbps download). If latency or jitter is too high, consider switching to a different network.
For online gamers, latency (ping) and jitter are critical metrics for gameplay experience. High latency causes input lag, while high jitter causes unstable frame rendering. Regular testing helps monitor network quality and catch issues early. For competitive gaming, aim to keep ping under 50ms.
When selecting broadband or mobile network providers, use this tool to compare speeds across different networks. By comparing download speeds, upload speeds, and latency, you can choose the best service for your needs. Test at different times of day for a comprehensive view of network quality.
Speed Units: Internet speeds are typically measured in Mbps (megabits per second). Note the difference between Mbps and MB/s (megabytes per second): 1 MB/s = 8 Mbps. When an ISP advertises "300M broadband," they usually mean 300 Mbps. File download speeds shown in MB/s must be multiplied by 8 to get Mbps.
Bandwidth vs. Speed: Bandwidth is the theoretical maximum transfer rate, while actual speed is affected by many factors. Network congestion, server load, routing hops, and device performance all impact real-world speeds. Therefore, measured speeds are typically lower than contracted bandwidth, which is normal.
Ping vs. Latency: Ping measures the time for an ICMP echo request to reach a host and return, used to test connectivity and delay. Latency is a broader concept referring to the total transmission time from sender to receiver. Lower ping values mean faster network responses.
Jitter Impact: Network jitter measures how much latency varies over time. For latency-sensitive applications like video calls and online gaming, low jitter is crucial. High jitter causes audio/video stuttering and screen tearing. If jitter exceeds 30ms, check your network connection.
Network Information API: Modern browsers provide the Network Information API, which exposes network type, estimated downlink bandwidth, RTT, and more. This data comes from the operating system and helps websites dynamically adjust resource loading based on network conditions.
This tool uses the browser Fetch API for testing. Results are affected by browser performance, network conditions, and server load, and should be used as a reference only. For precise measurements, use professional speed test software.
ISP speed tests typically connect to their own servers with shorter paths and better bandwidth. This tool uses publicly available test resources, which may have different network paths. Additionally, network congestion and device performance can affect results.
A full speed test (including download and upload) consumes approximately 10-30MB of data. The download test uses about 5-20MB of test files, and the upload test uses similar-sized data packets. Testing on WiFi is recommended.
Generally, ping under 30ms is excellent, 30-60ms is good, 60-100ms is acceptable, and over 100ms may indicate network issues. Fiber broadband typically has ping values below 10ms.
Download speed measures how fast data comes from the internet to your device, affecting web browsing, video streaming, and file downloads. Upload speed measures how fast data goes from your device to the internet, affecting file uploads, video calls, and cloud sync. Download speed is typically higher than upload speed.
This tool supports all modern browsers including Chrome, Firefox, Safari, and Edge. Your browser needs to support the Fetch API and Performance API for the test to work properly.
No. This tool runs entirely in your browser. All test data is processed locally and never uploaded to any server. Test results are displayed only on your device. We do not collect any personal information or network data.
Network jitter measures the variation in latency over time - the range of change between consecutive ping values. Lower jitter means a more stable network. For latency-sensitive applications like video calls and online gaming, low jitter is very important.