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Convert between MP3, WAV, OGG, FLAC, AAC, and more. 100% free and completely private.
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Supported: MP3, WAV, OGG, FLAC, AAC, M4A, WEBM | Max file size: 20MB | Max duration: 5 minutes
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All audio conversion happens in your browser. Your files never leave your device.
High-quality audio conversion powered by FFmpeg running directly in your browser.
No registration, no hidden fees, no limits. Convert as many audio files as you need.
Most popular compressed audio format. Great for music and speech with excellent compatibility.
Uncompressed audio format. Perfect for professional audio work and editing.
Open-source compressed format. Better quality than MP3 at similar bitrates.
Lossless compressed format. Preserves original audio quality with smaller file size.
Advanced audio codec. Better quality than MP3 at the same bitrate.
Apple's audio format. Excellent quality and widely supported on iOS devices.
Our free audio file converter makes it easy to convert between different audio formats directly in your browser. Whether you need to convert MP3 to WAV, WAV to MP3, or between any other audio formats, our tool provides fast, high-quality conversions without uploading your files to a server.
WAV files are uncompressed, so a few minutes of audio can run to tens of megabytes. Converting WAV to MP3 shrinks the file dramatically for email, messaging and web upload while staying compatible with every device and player. Choose High (320 kbps) to keep the WAV sounding close to lossless, or Medium (192 kbps) for the best size-to-quality balance. If the MP3 is still too large, run it through our MP3 compressor afterwards.
Go the other way — MP3 to WAV — whenever software needs uncompressed audio: editing in a DAW, importing into a video editor, or loading into a broadcast playout system. The converter decodes the MP3 and writes a standard PCM WAV that professional tools accept. The file gets larger, but it's the correct working format for editing.
M4A to MP3 turns Apple/iTunes audio into the universal format that plays everywhere. FLAC to MP3 makes a lossless archive small enough to carry on a phone. AAC to MP3 and OGG to MP3 solve the same compatibility problem for streaming and game audio. In every case, pick MP3 as the output, choose a quality level, and download — nothing is uploaded to a server.
Convert to MP3 or AAC for sharing, streaming and everyday listening — small files, universal support. Convert to WAV or FLAC for editing, mastering and archiving, where preserving every bit matters more than file size. Use M4A when you're staying inside the Apple ecosystem. Once your files are converted, you can merge them into one track or turn a voiceover into a finished jingle.
Sizes are for four minutes of stereo audio at the quality each format is normally used at, so they are comparable.
| Format | Type | 4 min stereo | Best for | Catch |
|---|---|---|---|---|
| MP3 | Lossy | 3.8 MB at 128 kbps 9.6 MB at 320 kbps | Sharing, playout systems, anything that has to just work | No gapless playback; encoder delay is baked in |
| AAC / M4A | Lossy | ~4.5 MB at 160 kbps | Apple devices, video soundtracks | Better than MP3 at the same bitrate, less universal in old hardware |
| OGG Vorbis | Lossy | ~4.0 MB at 160 kbps | Games, open-source projects | Patchy support in consumer hardware |
| Opus | Lossy | ~2.9 MB at 96 kbps | Speech, streaming, voice chat — the best quality per kilobyte | Not accepted by most playout and DJ software |
| WAV | Uncompressed | 42 MB at 44.1 kHz / 16-bit | Editing, mastering, broadcast delivery | Large; carries almost no metadata |
| FLAC | Lossless compressed | ~25 MB | Archiving — bit-identical to WAV at about 60% of the size | Not supported by some older players and car stereos |
This is the most common misunderstanding about audio conversion, and it is worth being blunt: converting a file to a better format does not make it sound better. Turning a 128 kbps MP3 into a WAV or a FLAC gives you a large file containing exactly the same audio, with exactly the same detail missing. The data a lossy encoder threw away is gone; nothing reconstructs it. All you have changed is the container.
What conversion is genuinely for:
And one rule that saves a lot of regret: avoid lossy-to-lossy conversions. MP3 to AAC, or MP3 to MP3 at a different bitrate, re-encodes audio that was already encoded, and the artefacts stack. If you have the lossless original, always convert from that instead. To check what you are actually starting with, run the file through our audio inspector for its format and bitrate, and the audio analyzer for the frequency spectrum — a hard cliff at 16 kHz means the "lossless" file you were given is a transcode of an MP3.
Frederick — founder of AI Jingle Maker and a professional voiceover artist for the past 25 years, working from London. He builds the tools on this site, writes these pages, and still records and mixes the handcrafted jingle packages himself in FL Studio using his own library of music and effects. There is no content team here: if something on this page is wrong, it is his mistake to fix, and you can reach him directly.
Radio World profiled him and these tools in its News Makers section — Using AI to Offer a Big-Market Sound on a Small-Market Budget (25 July 2026).
You can convert between MP3, WAV, OGG, FLAC, AAC, and more. The converter handles all common audio formats and processes everything directly in your browser — no upload to any server required.
Yes, completely free with no limits. There are no file size restrictions, no watermarks, and no sign-up required. The tool runs entirely in your browser using JavaScript, so your files never leave your device.
This converter is 100% browser-based. Your audio files are processed locally on your device using the Web Audio API — nothing is uploaded to a server. Your files stay private and secure at all times.
Lossy formats (MP3, AAC, OGG) compress audio by removing data the human ear is less likely to notice, resulting in smaller files. Lossless formats (WAV, FLAC) preserve the original audio quality with no data loss but produce larger files. Choose lossy for sharing and streaming, lossless for editing and archiving.
Convert MP3 to WAV when you need to edit audio in a DAW (digital audio workstation), import into video editing software, use in broadcast playout systems, or when an application requires uncompressed audio input. WAV is the standard working format for professional audio production.
Upload your WAV file, click the MP3 output button, choose a quality level (320kbps for near-lossless, 192kbps for a smaller file), and click Convert Audio. Your MP3 downloads instantly. The whole conversion runs in your browser, so the WAV never leaves your device.
Upload the M4A (Apple/iTunes) file, select MP3 as the output format, pick your quality, and click Convert Audio. You get a universal MP3 that plays on any device or app, with no upload to a server and no signup.
No. Converting a 128 kbps MP3 to WAV or FLAC produces a much larger file containing exactly the same audio, with exactly the same detail missing — the data a lossy encoder discarded is gone, and nothing reconstructs it. Conversion is for compatibility, for size, and for getting audio into a format your editor can work on. It is not an upgrade. Also avoid lossy-to-lossy conversions (MP3 to AAC, or MP3 to MP3 at another bitrate): you are re-encoding already-encoded audio and the artefacts stack. If you still have the lossless original, convert from that.
For keeping every bit, WAV and FLAC are identical in quality — FLAC is simply WAV compressed losslessly to around 60% of the size, so there is no reason to archive in WAV unless your software demands it. Among lossy formats at the same bitrate, Opus is the most efficient, then AAC, then MP3; at 320 kbps the difference between any of them is academic for most listeners and most playback systems. The practical answer is usually compatibility rather than quality: MP3 for anything that has to open everywhere, FLAC for anything you will edit again.
You can convert files up to 20MB and about 5 minutes long. Because everything runs locally in your browser, there are no daily conversion caps and no account needed — convert as many files as you like.