Convert MP3 to text online
To convert an MP3 to text, upload the file to IronMemo - up to 2 GB per file, roughly 36 hours of standard 128 kbps audio. The AI returns a transcript with speaker labels and timecodes in 30+ languages, plus a summary and action items. M4A, WAV and OGG files work exactly the same way.
Updated July 18, 2026
- MP3 files up to 2 GB
- 30+ languages
- M4A, WAV, OGG too
MP3 to text in three steps
From file to transcript without leaving the browser.
Upload your MP3
Drag in any MP3 up to 2 GB - a phone voice note, a podcast export, a dictaphone file. M4A, WAV and OGG upload the same way, no pre-conversion needed.
AI transcribes it
The language is detected automatically among 30+ supported ones. You get the text split by speaker, with timecodes that link every line back to the audio.
Use the text
Copy the transcript, export TXT, DOCX or SRT, or skip reading altogether: the summary and action items are generated for you.
How many hours of MP3 fit in 2 GB?
MP3 size depends only on bitrate, so the 2 GB upload limit converts into hours very predictably:
| Bitrate | Typical source |
|---|---|
| 64 kbps | Mono voice recorders, dictaphones |
| 128 kbps | Standard voice notes and podcasts |
| 192 kbps | High-quality stereo recordings |
| 320 kbps | Maximum MP3 quality (music-grade) |
Straight bitrate math (bitrate ÷ 8 × seconds); real files vary slightly. Practically, one upload covers days of voice recordings - no need to split files.
What people convert from MP3
Podcasts, interviews, lectures, dictaphone files - same pipeline, one upload.
Podcast episodes
Turn published episodes into searchable text, show notes and quotes with timecodes.
Interviews
Two or more voices separated by speaker - quote accurately without rewinding.
Lectures & webinars
Multi-hour recordings fit in a single upload and come back as structured notes.
What you get from an MP3
Not just a wall of text - a transcript your team can use.
Speaker-separated transcript
Every line is attributed and timecoded, so any quote can be checked against the original audio in one click.
Summary and action items
The long recording collapses into decisions, tasks and key points - often you never need the full text.
Exports that fit your tools
TXT and DOCX for documents, SRT for subtitles - or ask the AI questions about the recording directly.
Exports: TXT, DOCX, SRT
Built for real-world MP3 files
The limits that matter for MP3 uploads.
2 GB
per file - about 36 hours of 128 kbps MP3
One upload swallows days of voice recordings - no splitting.
30+
languages with automatic detection
Automatic language detection, mixed-language speech included.
3
export formats: TXT, DOCX, SRT
Plus AI chat over the transcript when reading is too slow.
MP3 to text - common questions
Explore more
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