List of the Top 11 Speed Test Websites for Windows in 2025

Take advantage of Speedtest® through our free native applications available on all your devices. Keep informed about the latest assessments of both mobile and fixed network performance from around the world. Discover how your country's internet speed compares on the Speedtest Global Index. Use the Ookla 5G Map to find the nearest locations where 5G is being implemented. Learn how to utilize in-depth insights on network performance tailored to your enterprise needs. The efficiency of your Android device significantly relies on the network quality it connects to. With the free Speedtest Android app, you can measure internet speed from anywhere globally, supported by our vast network of servers. The Speedtest app for Android also includes unique coverage maps that track LTE performance by carrier, helping you stay aware of areas with strong connectivity. Effortlessly switch between carriers and regions to assess coverage in frequently visited locations, enabling you to make well-informed choices regarding your connectivity. With these resources at your fingertips, you can significantly improve your internet experience and ensure that you are always connected to the best networks available.

Dotcom-Tools offers a website speed testing service that enables users to evaluate performance from three global locations, including access points located behind the Great Firewall of China. This feature is especially beneficial for ensuring that your website remains reachable to users in China. After completing the test, users receive comprehensive performance reports along with waterfall charts for a deeper understanding of loading times and bottlenecks. Additionally, users have the flexibility to select their preferred browser for testing, with compatibility extending to Chrome, Edge, and various mobile browsers like those on Android devices, iPhones, and iPads, among others. This versatility makes it a valuable tool for website owners aiming to optimize their site's performance across different platforms.

The speed at which your computer can download data from an online server is measured in megabits per second (Mbps), while upload speed indicates how fast data can be sent from your computer to an Internet server. On the other hand, ping, commonly known as "latency," measures the responsiveness of your Internet connection by calculating the time it takes for a request to be sent and a response to arrive, with the results displayed in milliseconds (ms); this metric is essential for evaluating how swiftly your Internet responds to commands. Additionally, jitter, which is calculated from multiple ping readings, assesses the consistency of your Internet connection and is also measured in milliseconds, where lower values suggest a more stable connection. Speed Test utilizes an extensive network of over 5,000 servers across the globe, selecting the one nearest to you to minimize ping times, thus typically indicating a reliable Internet connection with strong performance. This thorough methodology not only helps users measure their Internet quality but also offers insights into potential issues affecting their connectivity. Ultimately, understanding these metrics can empower users to optimize their Internet experience.

The Network Speed Test measures your internet connection's latency, download, and upload speeds. Utilizing servers located around the world, it evaluates the effectiveness of your internet connection in terms of both latency and throughput. Based on the connection speed, the test can recommend activities you might be able to do seamlessly, like streaming video or joining online meetings. You can easily swipe right to access a record of your previous tests, allowing for straightforward comparisons over time. During the testing process, some information about your device and network connection is shared with Microsoft, which helps them enhance their understanding of network quality and accessibility. If you allow it, we may also collect location data while you conduct the test. Be assured that this information is anonymized and will not be associated with your personal identity, nor will it be used for targeted advertising efforts. This initiative ultimately aims to enhance the quality of network services available to all users, ensuring a better online experience. Additionally, by participating in this test, you're playing a role in shaping the future of internet connectivity.

LAN Speed Test is a user-friendly and powerful application tailored for evaluating the transfer speeds of files, hard drives, USB drives, and Local Area Network (LAN) connections, whether they are wired or wireless. To initiate the testing process, you choose a target folder, which may be situated on a local or USB drive for speed evaluation, or on a network share to assess network performance. The application generates a file in memory and conducts a bidirectional transfer, effectively eliminating the impact of file caching on Windows or Mac systems while meticulously timing the entire operation, followed by automatic calculations for your convenience. For users with advanced skills, there is an option to connect to a LAN Speed Test Server instead of a shared folder, which allows for tests to be performed between the RAM of two computers, thus bypassing the limitations of slower hard drives. This uncomplicated method enhances its effectiveness, making it accessible for anyone interested in gauging their network performance. With its straightforward functionality, LAN Speed Test quickly proves to be an indispensable asset in your network toolkit, allowing for comprehensive assessments of Local Network speeds through tests between shared folders. Both casual users and technology aficionados will appreciate its simplicity and overall utility, making it a top choice for network diagnostics. Furthermore, the ease of use ensures that even those with minimal technical expertise can benefit from its insights.

NetSpot stands out as the sole application designed for conducting wireless site surveys, Wi-Fi analysis, and troubleshooting specifically on Mac OS X. The user-friendly NetSpot 2 is available for free and simplifies the process of performing extensive wireless site surveys on any Mac operating with Mac OS X 10.10 or newer versions. It is compatible with any 802.11 network, making it a versatile choice for users. As the premier native software for wireless site surveys on Mac, it allows users to quickly upload an area map or office layout to initiate their network site survey. With just a few easy steps, NetSpot can swiftly detect wireless signals as users move around to gather Wi-Fi data. This functionality enables you to analyze radio signal leakages, identify sources of noise, map channel usage, and locate the most effective access points, among other capabilities. Overall, NetSpot provides a comprehensive solution for those looking to optimize their wireless network performance.

This tool is designed to mimic your actual connection speed by employing advanced technology to evaluate your bandwidth capabilities effectively. It accommodates a wide range of connections, from as low as 1 Kbps to more than 1 Gbps, while our sophisticated algorithm accurately measures your stable download and upload speeds directly from our servers. Constructed with HTML5, this application removes the necessity for Flash or Java, offering clearer insights into your web browser's performance metrics. The speed results are indicative of the connection quality between your device and the server, with the final results representing the average of the peak download and upload burst rates observed during the testing process. It's important to note that your results might vary at different times due to factors such as network congestion and the specific browser you are using, so conducting tests at various times throughout the day is recommended for a thorough evaluation of your bandwidth. Moreover, this application facilitates a rapid launch of a speed test server without the need for command line usage, and it can function offline, making it perfect for assessing your Local Area Network or WiFi, or for installation on a server to check your speed. You can also monitor performance trends over time, which is essential for ensuring the reliability of your connection while being able to troubleshoot any issues that may arise.

Speed Check Light is an intuitive application specifically crafted to measure internet speed effortlessly. Users can test both downlink (download) and uplink (upload) speeds, along with evaluating latency metrics such as ping and jitter. Its user-friendly interface, combined with various customizable settings, is particularly noteworthy for its capability to adjust testing algorithms automatically, based on the type of internet connection being utilized—be it WiFi or different mobile networks including 2G, 3G, 4G LTE, or 5G. This adaptability significantly enhances the accuracy of the results provided. Furthermore, users can select a default server, access a map showcasing mobile network coverage, and review their test history complete with in-depth information for each test conducted. The application also reveals the user's IP address and ISP information while offering options to filter and sort results according to multiple parameters. Supporting both Mbps and kbps as units of measurement, it allows for easy sharing of results on social media platforms like Facebook and Twitter, all while being light on system resources. Beyond its basic speed testing capabilities, Speed Check Light enriches the overall user experience with an array of additional features that make it a valuable tool for anyone looking to monitor their internet performance.

Assess the performance of your ADSL, xDSL, cable, optical fiber, or satellite broadband connection by utilizing our speed test tool. This application employs an advanced algorithm that accurately measures both download and upload speeds, along with connection latency. nPerf takes advantage of a worldwide network of dedicated servers, optimized to deliver sufficient bitrate to make full use of your connection, ensuring a precise evaluation of your bandwidth. It supports a range of broadband and mobile networks, including ADSL, VDSL, cable, FTTH/FTTB optical fiber, satellite, WiFi, WiMax, and cellular technologies such as 2G, 3G, 4G (LTE), and 5G. Created by telecommunications enthusiasts, the nPerf speed test allows you to effortlessly check your internet speed with a simple click, and it is entirely free of advertisements! Furthermore, it captures the duration of a small data packet's round trip from your device to the nPerf server, with quicker response times signifying a more efficient connection. The intuitive interface guarantees that anyone can seamlessly conduct the test and easily comprehend the results, making it accessible for users of all levels of technical expertise. Whether you're troubleshooting a slow connection or simply curious about your internet speed, nPerf provides a reliable solution to meet your needs.

Our speed testing feature, which has undergone thorough evaluations and is demonstrated to be highly effective, is embedded in numerous websites worldwide. Each month, millions of users access this feature, benefiting from it through our applications as well as those provided by our partners. Powered by Speedchecker HTML5 technology, this tool functions without requiring any browser plug-ins, making it accessible across a variety of platforms, including PCs, Macs, Android devices, and iOS devices. The technology ensures accurate and trustworthy results by utilizing the well-established Websocket standard found in contemporary browsers, while legacy browsers default to HTTP testing techniques. Our cloud-based speed test controller optimizes testing client connections by selecting the most suitable servers at any given time, considering factors like geographical location, device capabilities, and server load. Furthermore, we provide bespoke designs that align with your specific needs, which facilitates a smooth integration with the visual elements of your website or application. This adaptability enables us to meet a wide range of user requirements and significantly enhance overall performance, ensuring that the testing experience is both efficient and user-friendly.

A wide range of network testing solutions exists, covering VoIP and Bandwidth Quality evaluations, in addition to global edge-to-edge implementations. Evaluating VoIP and Video Quality is essential to maintaining the user experience in applications such as voice calls and video meetings. The significance of traditional "speed" tests diminishes if the underlying testing protocol is not fully comprehended. Tackling bandwidth quality is critical to resolving user experience issues that may arise. Automated testing facilitates the seamless and secure gathering of crucial network performance metrics across both single and multi-edge networks. User experience holds the highest priority, irrespective of the application involved. It is crucial to implement comprehensive tests to confirm that a network fulfills its designated purpose. Determining whether a connection's capacity can handle its anticipated load is vital, as even robust connections can suffer from over-subscription, which may result in performance issues. Additionally, regular assessments can help preemptively identify and mitigate potential network bottlenecks. Ultimately, ensuring the dependability and efficiency of network services is key to enhancing user satisfaction.