Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
ConvertX.am converts VMDK 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.
Convert VMDK disk images to VHDX format instantly for seamless integration with Hyper-V environments. This conversion bridges VMware virtual machines to Microsoft infrastructure without compromising data integrity.
VMDK (Virtual Machine Disk) is the standard format utilized by VMware ESXi and Workstation, whereas VHDX is the advanced virtual hard disk format designed for Microsoft Hyper-V. Converting VMDK to VHDX adapts the storage container structure from VMware's architecture to support modern Hyper-V features, such as larger storage capacities up to 64 TB, improved block alignment, and better corruption protection. During the conversion process, the internal partition structure, file systems, and operating system sectors are carefully translated into the VHDX layout.
This conversion happens without any data loss, meaning the structural integrity of the virtual disk and all stored data remain completely unchanged.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
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.
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.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Virtual disks and raw drive images.
Common extensions: ISO, IMG, VHD, VMDK, QCOW2
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
