1.4 Memory testing utility for Windows

Felix Cheng

A free tool to measure the available storage capacity of a USB drive.

Freeware USB scanning software download, reviewed by Felix Cheng

A free tool to test storage media for counterfeit space claims.

H2testw is a free tool developed by Harald Boegeholz which can check your mass media devices for its actual size, as opposed to the advertised size.

The invention of this tool came about because of the sale of counterfeit SD cards and USB sticks which were not the actual claimed size.

With H2testw, you can write and read how much data the storage device is actually capable of holding. This can work with network drives, hard drives, SD cards and USB sticks.

Compatibility and License

H2testw is provided under a freeware license on Windows from PC utilities with no restrictions on usage. Download and installation of this PC software is free and 1.4 is the latest version last time we checked.

Is H2testw for Windows 10?

Yes. It can run on a PC with Windows 11 or Windows 10. Previous versions of the OS shouldn't be a problem with Windows 8 and Windows 7 having been tested. It comes in both 32-bit and 64-bit downloads.

Filed under:
  1. H2testw Download
  2. Free Computer Utilities
  3. USB Scanning Software
  4. Software for Windows 10
H2testw has been picked by our editors as good software.
H2testw has been tested for viruses and malware.
We have tested H2testw 1.4 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.