Compare the Top Speed Test Websites in Japan as of October 2024

What are Speed Test Websites in Japan?

Speed test websites and speed test apps are tools that enable individuals or IT professionals to test the speed of an internet connection on any device. Speed tests can measure upload speed, download speed, ping, latency, jitter, and more. Speed test websites can be used to test the internet speed of a WiFi or ethernet connection from a web browser on a desktop or laptop, while speed test apps can be downloaded natively to smartphones so that the wireless connection can be tested from the mobile device. Compare and read user reviews of the best Speed Test websites in Japan currently available using the table below. This list is updated regularly.

  • 1
    Ookla Speedtest
    Use Speedtest® on all your devices with our free native apps. Read the latest analyses of mobile and fixed network performance around the world. Find out how your country's internet ranks on the Speedtest Global Index. Discover your nearest 5G deployment on the Ookla 5G Map. Learn how to benefit from enterprise-level data on network performance. Your Android phone is only as good as the network it’s connecting to. Find out how fast the internet is anywhere in the world with the free Speedtest Android app and the help of our massive global server network. Speedtest for Android includes unique coverage maps that track LTE performance by carrier so you will always know where you are likely to experience strong connectivity. Easily switch between carriers and regions to compare coverage in the locations you frequent.
    Starting Price: $0.76 one-time payment
  • 2
    Dotcom-Tools

    Dotcom-Tools

    Dotcom-tools

    The website speed test from Dotcom-Tools enables users to test their web pages from for free with up to three worldwide locations, including from behind the Great Firewall of China to ensure your website can be accessed from users within China. Once a test is complete, users can drill into robust performance reports and waterfall chart analysis. Users may also select which browser they'd like to test from. This test supports Chrome, Edge and mobile browsers including Android, iPhone, iPad and more!
    Starting Price: Free
  • 3
    Cloudflare Speed Test
    Cloudflare Speed Test is a tool that allows you to measure the speed and consistency of your connection to the Internet. You can use it to verify that the speed your ISP promised you is the speed you are getting, compare different ISPs or test network connectivity in different parts of your house. The measurements run on the Cloudflare network, which spans data centers in over 200+ cities worldwide. This ensures you are testing against a server that is close to you, which means you are measuring only the speed of your ISP, with minimal networks in between that may impact your score. There are many speed test tools out there. Our mission is to help build a better Internet. To do so, we believe in giving users a choice of different services, you shouldn’t be tied to one provider and you should be able to compare results across different tools. The test uses the Cloudflare anycast network to test network performance.
  • 4
    FAST.com

    FAST.com

    Netflix

    FAST.com speed test gives you an estimate of your current Internet speed. You will generally be able to get this speed from leading Internet services, which use globally distributed servers. Download speed is most relevant for people who are consuming content on the Internet, and we want FAST.com to be a very simple and fast speed test. When you click the “Show more info” button, you can see your upload speed and connection latency (ping). FAST.com provides two different latency measurements for your Internet connection. “unloaded” and “loaded” with traffic. The difference between these two measurements is also called “bufferbloat”. To calculate your Internet speed, FAST.com performs a series of downloads from and uploads to Netflix servers and calculates the maximum speed your Internet connection can provide. FAST.com will test Internet speed globally on any device (phone, laptop, or smart TV with browser).
  • 5
    NetSpot

    NetSpot

    NetSpot

    NetSpot is the only professional app for wireless site survey, Wi-Fi analysis and troubleshooting on Mac OS X. It's FREE and very simple, no need to be a network expert to start using NetSpot today! All you need to conduct comprehensive wireless site survey is your MacBook running Mac OS X 10.10+, NetSpot works over any 802.11 network. Analyze your Wi-Fi Coverage NetSpot is the easiest native wireless site survey software for Mac. You need just a few clicks to load your office plan or area map and start a network site survey. Just point to where you are on the map and NetSpot starts measuring wireless signal right away, move around, and collect Wi-Fi data. That's it: now you have all the needed info to analyze radio signal leakages, discover noise sources, map channel usage, locate effective access points, etc.
  • 6
    SpeedTest Master

    SpeedTest Master

    SpeedTest Master

    Internet Bandwidth Speed Test is an internet speed meter for WiFi, 2G, 3G, 4G, Dsl, Adsl speed test. With just one tap, you will get accurate net speed test results in less than 30 seconds. Test net speed of the download, upload, and ping. The real-time graph shows the internet speed test of the connection. Thousands of worldwide servers improve the test speed. It's also a wifi analyzer that could help you test the WiFi connection. Test your download & upload speed, ping latency and jitter, etc. Diagnose network automatically when bad connection. Detect which devices are using your wifi without your permission. Detailed speed test information and Real-time graphs show connection status. Speed Test Master has helped millions of users worldwide to understand if their internet provider is giving them the speed they pay for.
    Starting Price: $2.49 per month
  • 7
    Speedcheck

    Speedcheck

    Speedcheck

    An internet speed test measures the connection speed and quality of your connected device to the internet. It does so by running multiple consecutive tests that analyze different aspects of your internet connection, namely ping (latency), download speed, and upload speed. Each of these values represents the connection's specific qualities, which you can read more about in the paragraph after the next. These should help you understand the final speed test results. But before we get to these, we first want to discuss how to perform each test. The download measurement is performed by opening multiple connections to a server and simultaneously starting the download of a large data file on all connections. This approach ensures that the entire bandwidth of the internet connection is maxed out, and thereby the maximum data throughput can be measured. Recording the data throughput against measurement time finally yields the available internet speed for downloading data.
    Starting Price: $3.99 one-time payment
  • 8
    SpeedOf.Me

    SpeedOf.Me

    SpeedOf.Me

    SpeedOf.Me API, the first and only speed test API, allows you to measure your users' connection speed. SpeedOf.Me is now partnered with NordVPN to offer its users the best quality VPN service at a discounted price. SpeedOf.Me is a broadband speed test that allows you to easily measure your actual Internet speed on all your devices like desktop, mobile, tablet, game console, smart TV, car, etc. Without having to host a SpeedOfMe software on your server, you are now able to run a SpeedOf.Me speed test right from your website or app. It is a Javascript-based API that allows you to measure download speed, upload speed, latency and jitter of the client. This means you can create your own speed test service, collect statistical information and benchmark the bandwidth of your users. Decide what audio/video streaming quality is suitable for the client. Tell the user how long it exactly takes to download/upload a specific file. Integrate it in your Internet-connected hard-ware/equipment.
    Starting Price: Free
  • 9
    Speed Test WiFi Analyzer
    Expert network testing and analysis tools, for WiFi, Ethernet, 4G/LTE and 5G/NR. Internet and iPerf3 speedtests. Wireless coverage 360 analysis. WiFi scanner and channel maps (inc. beacon signal IE decodes). LAN connected device scanner, who’s using the network. Internet or iPerf3 (server & client included). Concurrent ping, DNS, and HTTP latency results, in multiple servers with the configurable load. Remote uptime monitoring 24/7 of outages or slowdowns. Analyze wireless network coverage, in a home, a business or a venue. Using the Internet or iPerf3 speed testing (alongside WiFi analysis and concurrent ping/DNS/HTTP loads). Detailed network performance statistics, overall and for every specific location. Immediate results, no need to prepare, upload or manage floor plans. With detailed stats for RSSI, Phy speed, local and Internet pings, and much more. Quick and easy to use (no need for floor plans).
    Starting Price: $23 one-time payment
  • 10
    Speed Test
    Download speed measured in megabits per second (Mbps), how fast your computer can receive data from a server on the Internet. Upload speed, how fast your computer can send data to a server on the Internet. Ping, also known as “latency”, measures the reaction time of your Internet connection by calculating the time it takes between sending out a request to getting a response. Measured in milliseconds (ms), ping indicates how responsive your Internet connection is. Jitter, based on multiple measures of pings, jitter measures the consistency of your Internet connection. Also measured in milliseconds, the smaller the jitter, the more stable an Internet connection. Speed Test works with a global network of over 5,000 testing servers. The app selects a server nearby your current location with a fast ping, which usually indicates a reliable Internet connection with good throughput.
    Starting Price: Free
  • 11
    Network Speed Test
    Network Speed Test measures your network delay, download speed and upload speed. Using servers all over the world, Network Speed Test measures your network connection’s latency and throughput. Based on your connection’s speed, Network Speed Test will tell you what activities you might be able to do, such as stream music or video calls. Slide to the right to see a history of your previous tests for easy comparisons. When you test your network using the Network Speed Test, certain characteristics of your device and the network connection will be sent to Microsoft to help improve our understanding of network quality and availability. If you consent, we may also collect information about your location at the time of the test. The data we collect is not associated with you, and will not be used to identify or contact you or for other purposes like targeted marketing.
    Starting Price: Free
  • 12
    LAN Speed Test
    LAN Speed Test was designed from the ground up to be a simple but powerful tool for measuring file transfer, hard drive, USB drive, and Local Area Network (LAN) speeds (wired & wireless). First, you pick a folder to test to. This folder can be on a local drive or USB drive, etc. to test the drive speed, or a shared folder on your network to test your network speed. Next, LAN Speed Test builds a file in memory, then transfers it both ways (without effects of Windows/Mac file caching) while keeping track of the time, and then does the calculations for you. For more advanced users, you can test to LAN Speed Test Server instead of a shared folder to take the slower hard drives out of the process as you are testing from one computer's RAM to another computer's RAM. Simple concept and easy to use. You'll find that LAN Speed Test will quickly become one of your favorite network tools! Test the speed of your Local Network by testing to/from network shared folders.
    Starting Price: $10 one-time payment
  • 13
    V-SPEED

    V-SPEED

    V-SPEED

    The ultimate fully customizable V-SPEED SPEED TEST application for your website. Easy to install and ready in a few minutes. Measures bandwidth up to Gb/s. Test statistics database, advanced VoIP test, and much more are available. Free bandwidth tester, download & upload tests are instantly included. Always updated, the application runs in a cloud environment that is always up to date. The easy one-time installation process, simply registers your free account, download an installation package and follow the instructions. Your custom logo, upload your image. Latency test is also called ping-test. VoIP test, UDP jitter, and packet loss test. ISP presentation, name of ISP based on IP address. Multi-server, many servers load balancing. Statistics management, view test results. Result sharing, direct (image) or social networks. Advertisement, custom content after the test. Advanced graphics, sophisticated graphics from the gallery.
  • 14
    SpeedSmart

    SpeedSmart

    SpeedSmart

    Start Speedsmart with just one touch for the most accurate download, upload, ping and jitter speed test results on your iPhone, iPad, or Android device. Just one more touch to share that result. Your complete speed test history is kept including SSID, location, data usage and more for your review. Use it to see your connection over time or to keep your ISP honest. Your complete speed test history is kept including SSID, location, data usage and more for your review. Use it to see your connection over time or to keep your ISP honest. 100-speed test servers globally for you to speed test. Build sustainable habits that feel invisible. Share your entire speed test history in one tap to CSV. Troubleshoot or verify the speed you were promised. Create tasks with a clear, achievable goal. SpeedSmart provides a real-world internet speed test with a full history and more for your Wi-Fi & cellular connections on your iPhone, iPad or Android device with a beautiful easy-to-use interface.
  • 15
    FCC Speed Test
    Accurately measure the performance of your mobile broadband service by running active tests to evaluate the following metrics, download and upload speed, latency, jitter and packet loss. You can run these tests over both Wi-Fi and cellular connections. The data from these tests contribute to the FCC’s Measuring Broadband America program. The program is run by the FCC to fulfill its Congressional mandate to collect and make publicly available accurate and transparent performance metrics on US broadband. Your privacy is completely safeguarded. No personally identifiable information is collected. You can selectively run manual tests in the app across download speed, upload speed, latency, jitter and packet loss to accurately measure broadband or cellular performance. You can set a monthly data usage cap to ensure tests do not go over the limit. You can also monitor data usage in the app so you do not exceed monthly allowances by your carrier.
  • 16
    OpenSpeedTest

    OpenSpeedTest

    OpenSpeedTest

    Designed to replicate your real-world connection speed! We are using the latest technology available to test your Bandwidth. This application is designed for testing any connection, from 1 Kbps to 1 Gbps+. Our algorithm automatically detects your stable download and upload speed from our servers. We use HTML5! And no flash or Java is used, so you also get a better understanding of your web browser too. The connection speed in between you and the connected server. Final result will be the average value of the fastest download/Upload burst rates during the Bandwidth. Your test results may vary at different times of the day due to network congestion, and the web browser you choose etc. To get a good understanding of your bandwidth run the test at different times of the day. An application for launching a quick speed test server, without using any commands! This application can run offline! So you can use it to test your Local Area Network/WiFi or put it on a server to test your speed.
  • 17
    LibreSpeed

    LibreSpeed

    LibreSpeed

    Self-hosted Speedtest for HTML5 and more. Easy setup, examples, configurable, mobile-friendly. Supports PHP, Node, multiple servers, and more. This is a very lightweight Speedtest implemented in Javascript, using XMLHttpRequest and Web Workers. All modern browsers are supported, IE11, latest Edge, latest Chrome, latest Firefox, latest Safari. Works with mobile versions too. A reasonably fast webserver with Apache 2 (Nginx, IIS also supported). PHP 5.4 (other backends also available), MySQL database to store test results (optional, PostgreSQL and SQLite also supported), and a fast internet connection. A template to build an Android client for your LibreSpeed installation is available. A docker image is available on the Docker Hub. A partial Node.js implementation is available in the node branch. IP Address, ISP, distance from the server (optional), telemetry (optional), results sharing (optional), and multiple points of the test (optional).
  • 18
    M-Lab Speed Test
    M-Lab's Speed Test provides advanced diagnostics of the performance of your broadband connection through quick measurements. Measurement Lab (M-Lab) provides the largest collection of open Internet performance data on the planet. As a consortium of research, industry, and public-interest partners, M-Lab is dedicated to providing an ecosystem for the open, verifiable measurement of global network performance. Measurement tools are openly licensed and operated, allowing third parties to develop their own client-side measurement software and audit the source. Data collected is made available to the public, allowing researchers and anyone else to build on a common pool of network measurement information. Distributed infrastructure and a large user base provide an open, verifiable measurement platform for global network performance. Used by public organizations, academic researchers, regulators and companies around the world to understand the health of the Internet.
  • 19
    TestMy.net

    TestMy.net

    TestMy.net

    TestMy.net is a powerful broadband speed test that will test your Internet, calculate your transfer rate and output accurate, reliable and easy to understand results. TestMy.net is an independent third party and is not affiliated with your Internet service provider. Our results are unbiased because TMN has no vested interest in the outcome of your speed test. Check the download bandwidth speed of your Internet connection. Large tests, random data and no 3rd party applications ensure accurate connection testing. Check the upload bandwidth speed of your Internet connection using the same browser form submission upload that popular sites like YouTube utilize. Benchmark Internet connection bandwidth automatically. The automatic speed test is an easy way to make sure your provider is delivering what you're paying for. We work for the Internet consumers not the Internet providers.
  • 20
    Speed Check Light
    Speed ​​Check Light is a lightweight Internet testing tool. This application helps you to measure the downlink speed (download), uplink speed (upload) and delays in the transmission of packets (latency/ping/jitter). The program is equipped with a simple user interface and a multitude of configuration options. One of the major advantages of the Speed Check Light tool is automatic adjustment of the testing algorithms to the type of your connection (WiFi or 2G/3G/4G LTE/5G mobile networks). This ensures high accuracy of the results. Ability to select the default server, built-in map of the mobile network coverage, history of results with detailed information about the tests, IP/ISP address display, ability to filter and sort your results according to various criteria. Two standard units (Mbps and kbps), System clipboard and social networks handling (easy to publish the results on Facebook or Twitter), low demand on system resources.
  • 21
    Xfinity Speed Test
    We will measure the speed from our servers to this computer. Results are often less than plan speed due to WiFi conditions and device capabilities. It is important to differentiate between the speed of the Internet connection “to your home” and the speed reached by an individual device “within your home” because they are two very different measurements. Internet speed tests, like this one or the test found at SpeedTest , measure the latest or the speed reached by the device running the test. The results of this test are often less than the speed of your plan due to several factors beyond the control of your Internet provider, including WiFi conditions and device capabilities. Good coverage means that your device is receiving a strong Wi-Fi signal. That strong signal also offers as much speed as your device can handle. The further you move away from your gateway (modem or router), the more the signal strength decreases, slowing download and upload speeds and reducing coverage.
  • 22
    Speakeasy Speed Test

    Speakeasy Speed Test

    Fusion Connect

    The Speakeasy Internet Speed Test is an HTML5, non-Flash bandwidth test, which checks your connection’s download and upload speeds using your browser. Our bandwidth test uses HTML5 technology and does not require any downloads to run. Bandwidth speed tests are typically used to check speed. However, our Speed Test Plus also checks the line quality of the connection coming from your broadband provider. A bandwidth speed test is an effective way for individuals and businesses to measure their connection. Broadband providers sell tiered packages based on speed, so it’s important to test regularly to make sure you are getting the appropriate return on investment. For organizations that use VoIP services, reliable broadband speed is a core necessity for the daily work of every employee. From conference calls to exporting large amounts of data, the speed of your broadband connection has a huge impact on your bottom line.
  • 23
    Speedtest Pro
    Test your network directly from your toolbar and quickly test your internet performance. One-click testing of the Internet connection, and can reflect the user's network status from multiple angles. Speedtest Pro is a professional-grade speed tester, which can make it easy for users to find out the fault cause. Ping value could be measured and displayed in seconds. Test download speed and upload speed. Test the loading speed of the current web page. Open advanced options, you can choose to test the loading speed of the current web page or not. The time from the PC sends data to the webserver until it receives feedback from the server. It's usually expressed by the degree of network delay in online games. The larger the Ping value is, the more serious the network delay is, and the less smooth the game runs. Upstream traffic of network data per unit time. Ordinary broadband uplink and downlink are not equal, upstream broadband usually speeds limit.
  • 24
    Internet Speed Meter Lite
    Internet Speed Meter Lite displays your internet speed in the status bar and shows the amount of data used in the notification panel. This helps you to monitor network connection anytime while using your device. Real-time speed update in status bar and notification. Daily traffic usage in notification. Separate stats for Mobile network and WiFi network. Monitors your traffic data for the last 30 days. Internet Speed Meter Lite is battery efficient. A notification dialog appears when you tap the notification having. Graph and monitor last-minute internet activity. Time and usage of current session. Today's app usage for mobile and WiFi. A notification appears only when you are connected to the internet. You can manually select the color of user interface. Option to choose between blue or white status bar icon. (only for KitKat and below versions of Android). Option to show upload and download speed in separate notifications.
  • 25
    Network Speed
    Network Speed a small, fast and free network tool. You can monitor your network speed in real-time and show accurate info instantly in the background. Ever wonder why your webpage is loading slowly or looking for an internet speed meter for monitoring? Now you can check your network speed with ongoing notification or floating widget for real-time statistics at a glance. Real-time internet speed. App usage statistics. Network connections monitor (netstat). App usage statistics, lots of customization options. Track and monitor daily data and WiFi usage from notification. Battery and memory-efficient. Detailed daily data usage statistics. Download & upload speed graph. Daily traffic usage in notification. Monitors your traffic data for the last 30 days. Show ping result on floating widget. Hide when not connected to any network. Accurate data usage monitoring. Data usage alert (Bandwidth monitoring). Unobtrusive notification to let you focus on what's important.
  • 26
    Internet Speed Test
    Simple Speed Test is a free internet speed meter it can test the speed of your Wifi, 5G or 4G LTE internet connections from 100+ severs worldwide with accurate fast results. Simple Speed Test is an easy-to-use, fast, reliable and free network tool for testing your Internet download speed, upload speed, and ping time. Use the Speed Test app to see just how fast your Internet connection really is from anywhere in the world, whether on a mobile or broadband connection. The simple streamlined design makes it easy to use and understand. Real-time speed test for your download, upload speed. Network ping & jitter test. 5G & LTE speed test, check the speed of your mobile carrier. Split view and slide over support on iPad. History tracking of all your past results. Cellular and Wi-Fi network speed test. One-touch testing in under 30 seconds. Troubleshoot and verify the speed your ISP promised you. Fully detailed result view with a map of test location.
    Starting Price: $0.99 one-time payment
  • 27
    DSLReports Speed Test
    Test your download, upload and latency from a mobile phone up to optical fiber, and everything between. This test is pure HTML5. This test requires your browser's full attention for accurate results. Run the test when your network is quiet, and don't switch to other applications or change browser tabs during the test. A few Windows security and privacy software packages can block the test or slow the browser. Welcome to the speed test that tests internet speed not just speed to your ISP. A complete test takes less than 45 seconds. If you switch tabs during the test, it will stop (blame the browser!). Past tests will show up in this space, so start building your history. We test more than just top speed. This test needs a modern (recent) browser. If it hangs under Windows, please temporarily disable any browser extensions or security software that is likely to be a culprit.
  • 28
    Wifiner

    Wifiner

    Netspot

    Easily analyze your Wi-Fi and see the issues preventing you from having a stable and fast connection. You can run a comprehensive scan of your wireless network, get an interactive color-coded heatmap, and see the "dead" zones clearly. Visualization is the key for good planning — once you scan the site, Wifiner creates a visual heatmap of your space, so you can see where improvements need to be made to your network and how you can move the access points for optimal placement. Wifiner offers 11 types of heatmaps for better understanding which parameters affect your network most and comparing them to each other. Wifiner is friendly enough to those who are setting up their very first network at home and at the same time can provide incredibly detailed report to those who have a lot of experience in the field.
  • 29
    WIFI & Internet Speed Test
    We work to make your life easier. We care for your comfort. We know what you really want and create it. This app is a fast and accurate utility for evaluating your cellular (3G,4G,LTE) and Wi-Fi connection on any device. Perform an expert internet speed test with one tap and get all the necessary information about your connection. Real-time graphs with connection grade, download & upload chart, ISP average speed and more. Compare results with your ISP average speed and latency.
    Starting Price: $7.99 per month
  • 30
    Simple Speedcheck
    Simple Speedcheck makes it easy to test your internet speed. It’s easy, fast and accurate and the test results are presented in a user-friendly way with icons explaining what the internet speed can be used for. Run tests of cellular networks on 3g, 4g, LTE connections to improve your coverage. Test the ping, download and upload speed of WiFi hotspots on dsl, adsl, cable connections. Keep track of your tests in your personal result history. This includes download and upload speed, ping, signal strength, network name, internal and external IP and the test date. Compare your different 3g, 4g, LTE cell tests. Study the reliability of your broadband dsl, adsl, cable connections over time.
    Starting Price: Free
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