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Whisper Web
Free Audio Transcription

Audio to Text — Free Online Converter

Convert any audio file to text with fast local processing. Powered by OpenAI Whisper, running entirely in your browser. No uploads, no signups, no account required for local use.

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Why Use Whisper Web for Audio to Text

All Audio Formats

Supports MP3, WAV, M4A, FLAC, OGG, WebM, AAC, and every other format your browser can play. Just drag and drop.

100% Private

Your audio never leaves your device. All transcription happens locally in the browser using WebAssembly and WebGPU.

100+ Languages

Transcribe audio in English, Spanish, French, German, Japanese, Chinese, Korean, Arabic, and 100+ more languages.

WebGPU Accelerated

Get 3–5x faster transcription with WebGPU hardware acceleration on supported browsers. Falls back to WebAssembly automatically.

No File Size Limit

Since processing happens on your device, there are no server-imposed file size limits. Transcribe hour-long recordings without issue.

Export as TXT or JSON

Download your transcript as plain text or structured JSON with timestamps. Copy to clipboard with one click.

How to Convert Audio to Text

1

Upload Your Audio File

Drag and drop or select an audio file. Supports MP3, WAV, M4A, FLAC, OGG, and more.

2

Choose a Model

Select a Whisper model. Base works for most audio. Use Small or Medium for noisy recordings or accented speech.

3

Transcribe

Click start and watch the transcript appear segment by segment during processing. Processing runs entirely in your browser.

4

Copy or Download

Copy the text to your clipboard or download as TXT/JSON. No account or email required.

Popular Audio to Text Use Cases

Transcribe podcast episodes into show notes or blog posts
Convert voice memos and dictation into written text
Create text records from phone call recordings
Transcribe music lyrics from audio tracks
Generate written notes from audio lectures or seminars
Convert audiobook samples into text for reference
Transcribe field recordings for journalism or research
Create accessible text versions of audio content

Frequently Asked Questions

What audio formats are supported?
Whisper Web supports every audio format your browser can decode: MP3, WAV, M4A, FLAC, OGG, WebM, and AAC. There is no format conversion step — drag and drop your file, and transcription begins immediately.
Is there a file size limit?
No. All processing runs on your device, so there are no server-imposed upload limits. Users regularly transcribe files over 500 MB and recordings lasting several hours without issue.
How accurate is the transcription?
OpenAI Whisper achieves a 4.2% word error rate on the LibriSpeech benchmark — comparable to professional human transcribers. On clear audio with minimal background noise, expect 95%+ accuracy. Using a larger model (Small or Medium) improves results on accented or noisy recordings.
Do I need to create an account?
No account, email, or signup is required. Open whisperweb.dev and start transcribing immediately. Your first transcription can begin within 30 seconds of opening the page.
Is my audio data safe?
Yes — audio never leaves your device. All transcription runs locally via WebGPU or WebAssembly in your browser. You can verify this by disconnecting from the internet after the page loads; transcription continues to work offline.
Can I transcribe audio in languages other than English?
Whisper supports 100+ languages, including Spanish, French, German, Japanese, Arabic, and Mandarin. Enable automatic language detection or manually select the source language for optimal accuracy.

Related Tools

MP3 to TextTranscribe MP3 audio files with high accuracy.WAV to TextConvert WAV audio to text with lossless quality input.Video to TextExtract text from video files — MP4, WebM, MOV and more.Speech to TextReal-time speech recognition powered by OpenAI Whisper.AI TranscriptionAI-powered transcription with 99% accuracy on clear audio.

Convert Audio to Text — Free & Private

No signup. No upload. Free local processing. Just accurate transcription powered by AI.

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