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M4A Converter

Convert files to and from M4A online for free. Fast, secure, and high-quality file conversion with no sign-up or software required.

  • Free to use
  • No file stored beyond 1 hour
  • Encrypted over TLS 1.2/1.3
  • No watermarks

Drag and drop your files here or click to upload.

Maximum file size is 1GB

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

  1. 01

    Upload your file

    Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

  2. 02

    Choose an output format

    Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

  3. 03

    Convert & download

    Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is an M4A file?

MPEG-4 Audio

Developed By
Apple Inc. / MPEG
Initial Release
2001
MIME Type
audio/mp4

The M4A file extension denotes an audio-only MPEG-4 container, defined by ISO/IEC 14496-14 standards and typically encoded using Advanced Audio Coding (AAC) or Apple Lossless (ALAC). Originally popularized by Apple to differentiate audio content from standard .MP4 video files, the container utilizes an atom-based structure (e.g., ftyp, moov, mdat) to store audio streams and metadata. It serves as the successor to MP3, offering superior compression efficiency and fidelity at equivalent bitrates.

How to open an M4A file

M4A files are natively supported by the Apple ecosystem (iTunes, QuickTime, iOS Music) and Windows Media Player on modern Windows versions. Cross-platform compatibility is robust, with VLC Media Player, Audacity, and Winamp providing decoding capabilities. On Android devices, native players often handle M4A, though third-party apps like Poweramp ensure compatibility with ALAC-encoded variants.

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Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

  • 3,000+ conversions supported

    Every popular and niche format covered - video, audio, image, document, archive and more. New formats added regularly.

  • Fast, cloud-powered

    No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

  • Secure & private

    Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

  • Free - no account needed

    Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

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