About .m4a files
M4A is an AAC container — every Voice Memo, most Android recorder apps, and QuickTime audio exports land here. No conversion step: drop the file as-is.
Files up to 10 hours or 5 GB each. The box above takes files up to 500 MB; larger files continue on the upload page.
Where .m4a files come from
iPhone Voice Memos, lecture recordings, interviews taped on a phone.
What you get
Long recordings
One file up to 10 hours or 5 GB — no need to split it first.
Word-level timestamps
Every word is timed — accurate SRT/VTT subtitles come straight out.
99+ languages
The language is auto-detected; mixed-language recordings are handled per sentence.
Every export
TXT, SRT, VTT, DOCX and JSON on every pack — no format paywall.
Speakers named
Speakers are identified and named in the summary, key quotes and chapters.
Questions people ask
Do I need to convert .m4a to MP3 first?
No. Upload the .m4a file exactly as it is — decoding happens server-side, and lossless or original-codec input transcribes better than a re-compressed MP3 anyway.
Is there a size or length limit for .m4a files?
Files up to 10 hours or 5 GB each are accepted. The box on this page takes files up to 500 MB; larger files continue on the upload page.
How much does it cost?
The summary of any recording is free to read. A pack from $4 (500 minutes) opens the full transcript; larger one-time packs are $8 for 1,000 minutes, $12 for 2,000 minutes, $24 for 5,000 minutes, and credits never expire. Workspace is $19/month.
Can I paste a link instead of uploading?
Yes — paste a direct link or a page URL and the audio is fetched server-side, which is faster than uploading from a slow connection.
Related: Audio to text · MP3 to text · Video to text · Subtitle generator
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