10 Best Free USB Speed Test Software to Test Read & Write Speed USB

USB speed test software has become a very important tool, especially when you want to check the write and read speeds of USB flash drives or SD cards.  Not only that, many devices now use USB ports to connect to a computer or other devices. With these many devices using USB, it’s important to know the quality of the USB connection.

Most people own more than one USB flash drive, either because they’re cheap enough to hoard or because just in case the other one broke down. Also, with a lot of counterfeit items in the market, it’s important to know that you’re getting what you paid for, this is where USB speed test software comes in.


10 Best Free USB Speed Test Software to Test Read & Write Speed USB on a computer

Following are some best free tools to test USB speed. to test the speed of a simple USB, please download the software, install it and begin to test and measure the speed of your USB.


1. SpeedOut USB Speed Test Software

SpeedOut USB Speed Test Software

SpeedOut USB Speed Test Software


If you need to test USB speed so, you need tool name is SpeedOut. SpeedOut is a small, simple, and portable tool to measure the read and write speed of your USB flash drives. It can run tests at a low level, no need to run it as an admin, this helps to show results as accurately as possible without being affected by the drive file system.

To use it simply plug in your USB drive, select it on the SpeedOut drop-down menu, if you have more than one device, all of them will show on the menu. Next, run the test. SpeedOut will run 4 passes for both reading and writing tests, then display the average results for each.

You can save or copy the score to use for later or compare it to other devices, by simply right-clicking the title bar.

SpeedOut is very clean and smooth too, it runs with no problems and leaves no footprints on your devices. You don’t need to format your drives to run tests and no files are overwritten inside the drives. If you want a quick way to test your USB drives with straightforward results, you should try this one.


2. CrystalDiskMark

CrystalDiskMark Speed Up Test Software

CrystalDiskMark Speed Up Test Software


CrystalDiskMark is probably the most famous USB tool to measure sequential and random performance (Read/Write/Mix). It can be used to test the performance of hard drives, SSD, and USB drives. You can choose either portable, installer, or themed versions of the software.

Before you run the test, we recommend that you drop the default test size to 50MB/100MB and the number of passes to 1 or 2 for slower USB drives. CrystalDiskMark is designed for much faster devices that can satisfy many enthusiasts, so it can be very powerful.

Running the test for your USB drives shouldn’t take long at all. If you have a faster drive, try increasing the setting to 500MB/1GB. Select your drive from the drop-down list, and run the kind of test you want. You can run all 4 tests by clicking All.

You can see the result in real-time and after it’s done, you can save the results. You can also share your results with the community. The community is pretty big, so it’s easy to find similar devices to yours. Comparing results is very important to see whether your devices are working properly or not.


3. USBDeview




USBDeview is created by Nirsoft and it’s a portable USB speed test software. With this tool, you can see the list of your USB devices. You can choose to uninstall any USB devices attached to your computer. For beginner users, the interface might feel overwhelming but essentially you only need to look for your main USB drive.

Your USB device should be highlighted in green with a device type of “Mass Storage”, right-click to open the menu and select Speed Test, or with hotkey Ctrl + T. it will start a sequential read and write test with a 100MB file and gather the scores.

There is an option to share your benchmark results to the Nirsoft Speed Tests webpage for viewing and comparison purposes. Despite looking kind of old, USBDeview is still being supported and updated. It should run without any compatibility issues on a newer machine.


4. USB Flash Benchmark

USB Flash Benchmark

USB Flash Benchmark


USB Flash Benchmark is a plain and simple speed testing program for USB flash drives. it will run a full set of benchmark tests for speeds from 1KB chunks and up to 16MB. There is a nice graph at the bottom to show the results.

Sadly, the website to upload and compare your results is no longer available. The website alongside the database can’t be accessible anymore. But don’t worry, the program itself still works properly.

You can run the portable program, select your flash drive, and press the button to run the test. The test will begin with 16MB test first and continue down to 1KB test. The test takes several minutes to finish. Don’t forget to uncheck the report button as it doesn’t do anything anyway.

The software is really great at presenting the test results. There is a log that is updated in real-time, you can see the results as the test is in progress. Really handy for advanced users.

That being said, we don’t recommend using this software to test newer flash drives. There might be an error here and there.


5. Check Flash

Check Flash USB Speed Test

Check Flash USB Speed Test


Check Flash’s main function is to check the health of a USB flash drive. It can check whether the device has some bad sector or any kind of damage. But it can also run a read and write speed test. Additionally, it can use the more advanced logical or physical access type that allows flash drive erasing, backup and restore, and also customizing partition.

You can ignore the additional features, of course, if you only want to run read and write speed test, you can do just so.

“Use Temporary File” method is a two-test conducted in one run, the method uses temporary files to fill the remaining space on the flash drive and run an error check while reading the read and write speed at the same time. Some programs don’t run this way, that is without filling the drive with temporary files.

The file will be limited to 4GB for FAT/FAT32 format. Due to the method of testing, testing an empty USB flash drive will take a while. On the bright side, it’s portable and lightweight and can be customized with some command-line options available in Switches.txt.


6. RMPrepUSB



RMPrepUSB is great tool to test USB speed. It has so many features compared to most other pieces of software. It can do so many different things to USB drives.

Of course, the most important feature is the read and write speed test. Run RMPrepUSB and select your USB drive from the top, click the Test Speed button in the lower right to run the test.

The software then will run RMPartUSB.exe to run the test by reading from and writing to a file of 63MB. The result will be saved to CSV file, you can see the record of drives and scores from it.


7. Flash Drive/Card Tester

Flash Drive Card Tester

Flash Drive Card Tester


Last but not least is Flash Drive/Card Tester. It’s a tool to check your removable USB flash drives, Compact Flash cards, or SD cards for reading and writing errors while showing the speed of the drive at the same time.

Think of running multiple tests at the same time, this saves your time quite a lot if you check multiple USB drives. the results are easy to read; located at the bottom.


8. ParkDale




ParkDale reliable disk speed test tool to check read and write speeds from your SSD, HDD, SD Cards, USB Flash drive, or Cdroom devices. This tool is easy to use and it has a ” QuickAccess ” feature that allows you to test the files ystem with just a single click!


9. USB Flash Drive Tester

USB Flash Drive Tester

USB Flash Drive Tester


This tool is powerful to test the read and write speed of SD, MMC, CF, USB flash. This tool is completely free, you can download it at cnet.com. Lightweight, but reliable for the purposes of checking the speed of USB flash or SD card and avoid counterfeit products. Remember, there are currently many fake SD card products circulating on the Online market.


10. Flash Memory Toolkit

Flash Memory Toolkit

Flash Memory Toolkit


Flash Memory Toolkit is a powerful tool for checking USB drives or SD cards. This tool you must have and this tool runs on Windows and you can download it for free for personal use. This tool helps you to check the read and write speed of the error on the USB drive that gives you genuine and fake product information? Can you suspect a fake product if the speed is not reasonable?

It can read many things from one USB drive, making it a very convenient USB speed test software.


FAQ: USB speed test software

How do I test my USB Speed?

How do I test my USB Speed? Yes, Crystal disk mark and speed out are some well-known tools for benchmarking HDD, SSD, USB and storage drives. Or you can simply copy data to the drive and check that using the in windows built-in utility.

Why is my USB not being detected?

This may be due to several different cases like a damaged or dead USB flash drive, outdated drivers and software, partition issues, incorrect file system, and device conflicts. Other causes such as faulty hardware, dead system control or USB ports need professional help from your own device manufacturer or a certified computer technician.

How can I speed up my USB transfer speed?

In case your USB drive uses the 2.0 port, the USB transfer speed slow problem may happen. To speed up USB transfer, you can upgrade the USB to 3.0 because this port may provide 10 times faster than USB 2.0. Simply use the drive using USB 3.0 for data transfer in Windows 10.