Step 1: Drop your WAV files using the button above or by deposit and leave.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Receive your converted M4A files.
WAV to M4A Conversion FAQ
What bitrate does the M4A file use?
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A lossy M4A is encoded at 192 kbps by default. The Audio Quality setting also offers 320 kbps for the best quality and 128 kbps for a smaller file. A lossless M4A (WAV, FLAC) ignores the bitrate and keeps every sample.
How much quality do I lose converting WAV to M4A?
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Some, and it is permanent — this is the one direction where information is genuinely thrown away. WAV holds every sample exactly; M4A discards what a psychoacoustic model predicts you will not hear. At 192 kbps and above that prediction is good enough to be transparent on most material and most equipment. Keep the WAV as your master, because you cannot get back to it from the M4A. WAV normally stores raw uncompressed PCM — every sample kept exactly, at whatever bit depth and sample rate was captured. An M4A holds AAC in most cases, or Apple Lossless (ALAC) when it came from a lossless rip.
Can I tag the M4A with artist and album information?
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Yes, and it is a genuine gain over WAV, which has nowhere dependable to store any of it. M4A carries title, artist, album, year, track number and embedded cover art in the container itself, so a music library files it correctly without a manual pass. M4A keeps rich iTunes-style metadata, chapters and artwork intact, and is the native audio format across every Apple device.
Will going from WAV to M4A reduce my audio quality?
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If WAV is lossy and M4A is lossless (e.g. MP3 → WAV), the M4A file is no better than the WAV — you can't recover information that's already been thrown away. If WAV is lossless and M4A is lossy, expect the M4A codec to recompress; at 192 kbps this is transparent for most content.
Can I batch convert hundreds of WAV files to M4A?
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Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
Will the M4A keep the same sample rate as WAV?
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By default yes (48 kHz WAV → 48 kHz M4A). If you need to downsample for compatibility (e.g. 96 kHz → 44.1 kHz for CD burning) the advanced sample-rate option does this with high-quality resampling.
Can I normalize loudness in the WAV to M4A step?
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Not in this step. The converter has no loudness setting and leaves the level as it is. To even out the volume, run the finished M4A through a Normalize tool on this site.
Will the M4A play on my car stereo / iPod / audiobook app?
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MP3 plays almost everywhere. AAC plays on Apple devices, most Android phones and Sonos. FLAC plays on Sonos and Android but not on older iPods, and WAV plays on nearly everything but makes large files. There are no device presets on this page, so choose the target format your player supports.
Is my WAV file private during conversion?
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Yes. Nobody listens to or shares the audio, which matters for personal audiobook libraries, and uploaded WAV files and their converted copies are deleted automatically about 24 hours after conversion.
How long does converting a 10-hour audiobook WAV to M4A take?
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It depends on the size and length of the file. Small documents and images are usually ready quickly. Long videos take the longest, because most video conversions re-encode every frame.
