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 uncompressed WAV files into compact M4A containers for better compatibility with Apple devices. This tool is essential for users looking to manage their audio library without losing accessibility.
WAV is a raw, uncompressed media container primarily used for studio-grade audio storage, while M4A is a modern media container based on the MPEG-4 standard. Converting from WAV to M4A wraps your audio data into an efficient structure, effectively managing your storage space. Since both formats act as containers for audio data, the conversion process focuses on re-packaging the stream to suit playback environments that prioritize the M4A standard.
Because you are moving between two robust media containers, the audio fidelity remains high. The change in file size is typically insignificant, ensuring that your converted tracks retain their original acoustic detail.
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
