Disk images

VDI → VMDK

Learn about the formats: What is VMDK? What is VDI?

At a glance

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

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

Convert your VirtualBox VDI disk image to VMware VMDK format instantly with ConvertX. This conversion is essential when migrating virtual machines from VirtualBox to VMware ESXi, Workstation, or Fusion.

VDI (Virtual Disk Image) is the native disk format used by Oracle VirtualBox, whereas VMDK (Virtual Machine Disk) is the industry standard developed by VMware. When you convert VDI to VMDK, the underlying virtual drive structure is translated to be recognized by VMware hypervisors, allowing your guest operating system and installed software to run without reconfiguration.

The conversion between VDI and VMDK is strictly lossless, meaning the data integrity of your virtual disk sectors is preserved completely.

Tips

Shut down the virtual machine and ensure it is not in a saved state before converting the VDI file.
Verify that your target VMware hypervisor supports the specific VMDK variant, such as monolithic or split disk types.
Ensure you have sufficient free storage space on your drive during the conversion process.

Common use cases

Migrating a development or testing environment from VirtualBox on a local desktop to an enterprise VMware ESXi server.
Standardizing corporate virtual infrastructure by moving all legacy VirtualBox VMs onto VMware-based hosts.
Collaborating with team members who exclusively use VMware Workstation or Fusion instead of VirtualBox.

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.