H2W file icon

H2W File Extension

H2testw

What is H2W file?

Files with the extension H2W belong to the category of test files.

What do H2W files contain?

The content of files with the H2W extension consists of data generated using the H2testw and F3 applications. Both programs are used to test USB drives and SD cards in terms of their real capacity and read/write speed. Files with the H2W extension store information that is irrelevant from the user's perspective, and even dedicated software. In this case, it's only about the ability to measure the actual time of performing input-output operations.

How are H2W files utilized?

Files with the H2W extension vary in size depending on the application in which they were generated. The H2testw program creates one H2W file of 1 GB volume and subsequent ones in 1 MB size until the entire capacity of the tested device is filled. On the other hand, the F3 program generates H2W files in the size of 1GB, and only the last one has a smaller volume, thereby perfectly filling the tested memory. The algorithms of both applications measure the writing and reading speed of all generated H2W files, and based on the average, present the results to the user. Additionally, when writing H2W files, the real capacity of USB drives and SD cards is also calculated.

Programs which support H2W file extension

The following listing features H2W-compatible programs. Files with H2W extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

Programs that support H2W file

Windows Windows

Updated: 04/06/2024

How to open file with H2W extension?

There can be multiple causes why you have problems with opening H2W files on given system. What is important, all common issues related to files with H2W extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Install H2testw software

Install software to open H2W file The most common reason for such problems is the lack of proper applications that supports H2W files installed on the system. The solution to this problem is very simple. Download H2testw and install it on your device. The full list of programs grouped by operating systems can be found above. The safest method of downloading H2testw installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Check the version of H2testw and update if needed

Update software that support file extension H2WIf the problems with opening H2W files still occur even after installing H2testw, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of H2testw is available. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. If you have an older version of H2testw installed, it may not support H2W format. The most recent version of H2testw is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate H2testw files with H2testw

If the issue has not been solved in the previous step, you should associate H2W files with latest version of H2testw you have installed on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Associate software with H2W file on Windows

Selecting the first-choice application in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the H2W file
  • Next, select the Choose another app option and then using More apps open the list of available applications
  • Finally select Look for another app on this PC, point to the folder where H2testw is installed, check the Always use this app to open H2W files box and conform your selection by clicking OK button
Associate software with H2W file on Mac

Selecting the first-choice application in Mac OS

  • By clicking right mouse button on the selected H2W file open the file menu and choose Information
  • Proceed to the Open with section. If its closed, click the title to access available options
  • Select H2testw and click Change for all...
  • Finally, a This change will be applied to all files with H2W extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Verify that the H2W is not faulty

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper H2W file. Being unable to access the file can be related to various issues.

Check H2W file for viruses
1. Verify that the H2W in question is not infected with a computer virus

Should it happed that the H2W is infected with a virus, this may be that cause that prevents you from accessing it. Scan the H2W file as well as your computer for malware or viruses. If the H2W file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If the H2W file was sent to you by someone else, ask this person to resend the file to you. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with H2W extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the H2testw file again.

4. Make sure that the system has sufficient resources to run H2testw

If the system is under havy load, it may not be able to handle the program that you use to open files with H2W extension. In this case close the other applications.

5. Ensure that you have the latest drivers and system updates and patches installed

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with H2testw file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle H2W files.

Do you want to help?

If you have additional information about the H2W file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on H2W file.

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