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Whisper Web
Free MP3 Transcription

MP3 to Text — Free Online Converter

Upload an MP3 file and get a full text transcript. Powered by OpenAI Whisper running locally in your browser. No upload to servers, no signup, free local processing.

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The Easiest Way to Transcribe MP3 Files

Built for MP3

Optimized for the world's most common audio format. Drag and drop your .mp3 file and get a transcript in minutes.

Zero Upload

Your MP3 file is processed entirely in the browser. It is never sent to any server. Safe for confidential recordings.

100+ Languages

Transcribe MP3 files in English, Spanish, French, German, Chinese, Japanese, Korean, Arabic, and 100+ other languages.

Fast Processing

WebGPU acceleration makes transcription 3–5x faster. A 30-minute MP3 typically processes in under 10 minutes.

Timestamped Segments

Get time-aligned text segments so you can pinpoint exactly when each part was spoken in the original recording.

TXT & JSON Export

Download the transcript as plain text or structured JSON with timestamps. One-click copy to clipboard also available.

How to Convert MP3 to Text

1

Upload Your MP3 File

Drag and drop your .mp3 file onto the page, or click to browse. No format conversion needed.

2

Select Model & Language

Choose a Whisper model (Base is recommended for most MP3s) and select the spoken language.

3

Transcribe

Click start and watch the AI transcribe your MP3 segment by segment during processing. Everything runs locally on your device.

4

Export

Copy the transcript to clipboard, or download as TXT or JSON. No email or signup required.

Common MP3 Transcription Scenarios

Transcribe podcast episodes saved as MP3
Convert voice recordings and dictation to text
Create text from audiobook samples
Transcribe MP3 recordings of meetings or calls
Generate show notes from audio interviews
Convert lecture recordings into study notes
Transcribe music lyrics from MP3 tracks
Create searchable archives of audio recordings

Frequently Asked Questions

Can I upload large MP3 files?
Yes — there is no file size limit. All processing runs on your device, so there are no server-imposed upload restrictions. Users regularly transcribe MP3 files over 500 MB and recordings lasting 2+ hours without issue.
How accurate is MP3 transcription?
OpenAI Whisper achieves a 4.2% word error rate on standard benchmarks. On clear speech MP3s with minimal background noise, expect 95%+ accuracy. For lower-quality recordings, selecting a larger model (Small or Medium) significantly improves results.
Does MP3 compression affect accuracy?
Minimal impact at normal bitrates. MP3 files at 128 kbps or higher produce transcription results nearly identical to uncompressed WAV. Only very low bitrate files (below 64 kbps) may see slightly reduced accuracy due to compression artifacts.
Can I transcribe multiple MP3 files?
With the free Unlimited plan, you can batch-upload multiple MP3 files for cloud transcription. In local mode, files are processed one at a time — upload each MP3 sequentially and export each transcript.
Is this really free?
Yes. Local mode is completely free with no account, no signup, and no usage limits. The AI model runs on your own hardware, so there are no server costs. An Unlimited plan is also available for cloud-powered batch transcription.
What if my file isn't MP3?
Whisper Web supports all common audio formats: WAV, M4A, FLAC, OGG, WebM, and AAC. Simply upload any audio file your browser can decode — no format conversion needed.

Related Tools

WAV to TextConvert WAV audio to text with lossless quality input.Audio to TextConvert any audio file to text — MP3, WAV, M4A, FLAC and more.Voice to TextDictate or upload voice recordings and get instant transcripts.YouTube to TextTranscribe YouTube videos to text — just paste the URL.AI TranscriptionAI-powered transcription with 99% accuracy on clear audio.

Transcribe Your MP3 Files — Free

No signup. No server upload. Free local processing. Just drag, drop, and transcribe.

Upload MP3 & Transcribe