Step 1: Upload your WMA files using the button above or by drag and drop.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Download your converted M4A files.
WMA to M4A Conversion FAQ
How do I convert WMA to M4A audio?
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Upload your WMA file and PDF.to re-encodes it into a M4A container with sensible default bitrate and sample-rate. The M4A download is ready in seconds.
Is WMA to M4A a lossy or lossless conversion?
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If both WMA and M4A are lossless (WAV, FLAC, AIFF), no quality is lost. If M4A is lossy (MP3, AAC, OGG, Opus), audio is re-encoded; we default to a high bitrate (192-320 kbps) for near-transparent quality.
What bitrate does the M4A output use?
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192 kbps by default for M4A where applicable. Use the options panel to pick 96, 128, 192, 256, or 320 kbps depending on whether you want smaller files or higher fidelity.
Are tags (artist, title, album) preserved when converting WMA to M4A?
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Yes. ID3 / Vorbis / iTunes-style tags are mapped across formats. Album artwork is preserved when M4A supports it.
Will sample-rate and bit-depth survive the WMA to M4A conversion?
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Yes by default. We do not downsample or dither unless you ask for it in the options panel. For voice you can opt into 22 kHz mono to shrink file size.
Can I convert a stereo WMA to mono M4A?
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Yes — toggle the 'force mono' option. This is useful for podcasts and voice memos to roughly halve file size.
Does PDF.to support multi-channel (5.1, 7.1) WMA files?
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Yes for M4A formats that support multi-channel (AC3, FLAC, Opus). For stereo-only targets, multi-channel audio is downmixed using a perceptually weighted mix.
Can I batch-convert WMA files to M4A?
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Yes. Drop a whole folder of WMA files; each becomes a separate M4A and all are zipped for download.
Is the WMA to M4A converter free?
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Yes for files under 100 MB. PRO unlocks larger files (5 GB), parallel jobs, and higher bitrates.
Does the converter remove DRM from WMA files?
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No. PDF.to does not attempt to remove DRM. Conversions only succeed on unprotected source files.
Will the M4A I download play on iPhone, Android, and desktop?
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Yes. M4A is supported natively across all major platforms or via universally available codecs. We default to the most-compatible M4A profile.
Are my WMA files private during conversion?
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Yes. Uploads are encrypted in transit, the conversion runs in an isolated worker, and both the WMA and M4A files are deleted within an hour.