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 high-fidelity FLAC audio files into the versatile M4A container format. This tool is ideal for users who need to maintain Apple device compatibility without compromising their music library structure.
FLAC is a lossless audio container known for its archival-grade transparency, while M4A is an Apple-standard container often utilized for AAC-encoded audio. During this conversion, our engine remuxes or transcodes the stream into the M4A structure, ensuring the file remains optimized for iTunes, QuickTime, and portable iOS devices.
While FLAC is lossless, M4A is frequently used for lossy AAC compression. By choosing high-bitrate settings, you retain near-perceptual transparency to the original source.
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
