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.
Convert your audio files from WMA to AAC format quickly and efficiently. This tool is ideal for users needing to make Windows Media Audio files compatible with Apple devices and modern media players.
WMA (Windows Media Audio) is a proprietary format developed by Microsoft, primarily used in Windows environments. AAC (Advanced Audio Coding) is a standardized, highly efficient format that serves as the successor to MP3 and is the native format for iTunes and iOS devices. When converting between these two, you are moving from a proprietary container to a more universally supported, open-standard container.
Since both WMA and AAC are lossy compression formats, please note that transcoding will result in generational quality loss. The file size will remain largely unchanged during this process.
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.
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
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
