Any Audio to MP3
Convert any audio format to MP3 directly in your browser. No uploads to a server, no account required.
Drop your audio file here or click to browse
Accepted: MP3, WAV, FLAC, M4A, AAC, OGG, Opus
What This Tool Does
Converts browser-supported audio formats — MP3, WAV, FLAC, M4A, AAC, OGG, and Opus — to MP3 directly in your browser. No file is uploaded to any server; all processing happens locally using the Web Audio API.
Who This Is For
- Musicians and podcasters who export recordings as WAV or FLAC and need an MP3 for distribution
- iPhone users with M4A voice memos that won't play on Android or Windows
- Anyone migrating a music library to a universally compatible format
- Developers testing audio pipeline inputs before writing conversion code
Example: Input: A 45 MB FLAC album track at 96kHz/24-bit → Output: A 320 kbps MP3 at roughly 10–12 MB, playable on any device or platform
💡 After converting to MP3, use the Audio Trimmer to cut the recording to the section you need. For transcribing the spoken content to text, Audio to Transcript converts speech directly in your browser. If the source audio came from a video file, MP4 to MP3 handles video-to-audio extraction directly.
Related Guides & Tutorials
Audio Format Compatibility Guide
| Format | Created By | Compression | Typical Bitrate | Common Source |
|---|---|---|---|---|
| MP3 | Fraunhofer | Lossy | 128–320 kbps | Music, podcasts — universal |
| WAV | IBM/Microsoft | Uncompressed | 1,411 kbps (CD) | Recording, mastering |
| AAC | Apple/MPEG | Lossy | 128–256 kbps | iTunes, Apple Music, streaming |
| M4A | Apple | Lossy (AAC) | 128–256 kbps | iPhone recordings, Apple ecosystem |
| FLAC | Xiph.Org | Lossless | 400–1,400 kbps | Audiophile music, archiving |
| OGG / Opus | Xiph.Org | Lossy | 80–320 kbps | Open source, gaming, Spotify internally |
⚠️ WMA and AIFF are not supported — browsers do not expose these formats to the Web Audio API.
Choosing the Right MP3 Bitrate
- 320 kbps — highest quality MP3. Virtually indistinguishable from lossless at normal listening. Use for archiving or when quality is the priority.
- 192 kbps — excellent quality. The sweet spot for music where file size matters. Most people cannot distinguish this from 320 kbps.
- 128 kbps — good quality for voice content (podcasts, audiobooks, recordings). Acceptable for music but some listeners notice compression artifacts.
- 64–96 kbps — voice quality only. Fine for phone calls, speech, and low-bandwidth applications. Not suitable for music.
- Avoid re-encoding lossy to lossy when possible. If you have a video file and want the audio, use the MP4 to MP3 extractor instead — it pulls the audio stream without re-encoding. — converting AAC 128 kbps to MP3 128 kbps does not recover quality. The result will be slightly worse than either source format. When possible, convert from a lossless source (WAV, FLAC).
Complete Audio Workflow
Convert any format to MP3 and pair it with these tools for a full audio pipeline:
- Trim the converted MP3 to the exact clip length
- Transcribe the MP3 to text using browser speech recognition
- Convert WAV specifically — dedicated tool for uncompressed audio
- Convert M4A from iPhone — dedicated tool for Apple audio files
- Extract audio from MP4 video — pull the audio track from video files
Frequently Asked Questions
How It Works
When to Use This Tool
- →Converting a format your device or app doesn't support to the universally compatible MP3
- →Preparing audio for upload to podcast hosts, music platforms, or video editors that require MP3
- →Reducing a large FLAC or WAV archive to manageable MP3 files for everyday listening
- →Standardizing audio formats across a collection with mixed file types
🔒 Privacy & Security
All audio processing uses the Web Audio API built into your browser — no audio is uploaded to any server. This is the safest way to convert recordings that may contain private conversations, confidential interviews, or personal content.
You Might Also Need
Related Tools
- Need to capture the audio first? Use the Voice Recorder to record in your browser, then convert. → record audio first, then convert