Disk images

QCOW2 → VHDX

Need the other direction? VHDX → qcow2 →

Learn about the formats: What is QCOW2? What is VHDX?

At a glance

ConvertX.am converts QCOW2 files to VHDX online, for free and without signing up. Upload a file of up to 500 MB and download the VHDX result; uploaded and converted files are deleted automatically within about an hour.

Input:: QCOW2
Output:: VHDX
Price:: Free, no sign-up
File size:: Up to 500 MB
Your files:: Deleted automatically within about an hour

Convert QCOW2 disk images to VHDX format instantly using ConvertX. This tool is essential for administrators migrating virtual machines from KVM/QEMU environments to Hyper-V.

QCOW2 (QEMU Copy On Write version 2) is the native disk image format for QEMU hypervisors, supporting features like compression and backing files. VHDX is the modern virtual hard disk format designed by Microsoft for Hyper-V, supporting much larger capacities up to 64TB and better resilience against corruption. When converting from QCOW2 to VHDX, the underlying block structure of the virtual disk is translated to match Hyper-V requirements while maintaining the exact data integrity of your guest operating system.

The conversion between QCOW2 and VHDX is entirely lossless. Since both are block-based virtual disk formats, your data quality and file contents are preserved completely without any compression artifacts.

Tips

Ensure your QCOW2 image is shut down cleanly and not in a running or suspended state before uploading.
Check available storage space on your destination drive, as VHDX dynamic disks may expand differently than QCOW2 sparse files.
Remove any internal QCOW2 snapshots before conversion to keep the resulting VHDX file clean and manageable.

Common use cases

Migrating virtual machines from Proxmox, KVM, or OpenStack to a Microsoft Hyper-V infrastructure.
Testing QEMU-based development appliances within a local Windows Hyper-V environment.
Consolidating mixed-hypervisor server infrastructure into a centralized Windows Server management system.

Why ConvertX stays free — forever

We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.

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Free tools today — and always

Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.

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Privacy-first processing

Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.