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 MP4 video files into high-quality WAV audio tracks instantly. This tool is perfect for users who need to extract pristine audio from video footage for professional editing or archiving.
MP4 is a versatile multimedia container primarily designed for video playback, often using lossy compression algorithms like AAC to reduce file size. In contrast, WAV is a raw, uncompressed audio container format that preserves high-fidelity sound. When you convert MP4 to WAV, you are stripping away the video stream and re-encoding the audio into a linear PCM format. This process typically results in a significantly larger file size, as WAV does not employ the aggressive compression found in video containers.
Since MP4 uses lossy compression, the audio data is already compressed; converting to WAV will not restore lost frequencies, but it will prevent any further generation loss during future editing.
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.
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
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
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
