Free online QCOW2 to VDI converter
Convert QCOW2 virtual disks to VirtualBox VDI format with qemu-img.
Convert QCOW2 to VDI online - free
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How to convert qcow2 to vdi file
- Virtualization
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Source format: qcow2
QCOW2 is the second version of the QEMU Copy On Write disk image format. It is widely used with QEMU and KVM virtual machines, especially on Linux-based virtualization stacks. QCOW2 supports features such as snapshots, copy-on-write storage, compression, and optional encryption, which makes it a flexible choice for VM disks. It is commonly used for virtual machine images, testing environments, and systems that need efficient storage usage.
Target format: vdi
VDI is VirtualBox Disk Image, the native virtual disk format used by Oracle VM VirtualBox. It is designed for VirtualBox virtual machines and is convenient when you want to move a disk image into a VirtualBox-based environment. VDI files can be dynamically allocated or fixed-size, and they integrate well with VirtualBox features such as snapshots and cloning. The main advantage of VDI is direct compatibility with VirtualBox and straightforward management inside that platform.
How to perform the conversion
The most reliable method is to use qemu-img, which is included with QEMU and is available on Linux, macOS, and Windows builds of QEMU. It can convert between many virtual disk formats, including QCOW2 and VDI.
- Install QEMU tools if they are not already available.
- Open a terminal or command prompt.
- Run the conversion command:
qemu-img convert -O vdi source.qcow2 target.vdi - Wait for the process to finish. The resulting
target.vdifile can then be attached to a VirtualBox VM.
If you want to inspect the source image first, you can use qemu-img info source.qcow2 to check its size, format, and features before converting.
You can also convert the file on 101convert.com for free, without installing any software.
In VirtualBox, you can then create a new VM or replace an existing disk by opening Settings → Storage and attaching the new VDI file as a virtual hard disk.
Notes on quality, compatibility, or limitations
The conversion is usually lossless at the disk-image level: the file system and data inside the virtual disk are preserved. However, some QCOW2-specific features do not carry over to VDI, such as internal snapshots, advanced backing-file behavior, and certain metadata features. If the QCOW2 image uses encryption or unusual options, verify compatibility before converting.
Also note that the converted VDI may be larger or smaller depending on whether the source image is sparse and how VirtualBox stores the disk. After conversion, it is a good idea to boot the VM once and confirm that the guest OS starts correctly, especially if the disk was moved between different hypervisors or hardware emulation settings.
Note: This qcow2 to vdi conversion record is incomplete, must be verified, and may contain inaccuracies. Please vote below whether you found this information helpful or not.
QCOW2 vs VDI: format comparison
How the QCOW2 and VDI formats compare on the properties that matter most for this conversion.
| Property | .QCOW2 QEMU Copy On Write version 2 | .VDI VirtualBox Virtual Disk Image |
|---|---|---|
| Compression | Both | Both |
| Encryption | Yes | — |
| Bootable | Yes | Yes |
| Operating system support | Wide | Wide |
| Typical file size | Medium | Very large |
| Open standard | No | No |
| Introduced | 2004 | 2007 |
| Developer | QEMU project / Fabrice Bellard and contributors | Oracle (originally InnoTek / Sun Microsystems) |
Frequently asked questions
Is the QCOW2 to VDI converter free?
Yes, converting QCOW2 to VDI on 101convert.com is completely free. No registration, email address or installation is required.
How large can my QCOW2 file be?
You can upload QCOW2 files up to 2000 MB and convert up to 1 files at once in a single batch.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert QCOW2 to VDI?
No. The QCOW2 to VDI conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid QCOW2 file for this QCOW2 to VDI conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.