Audio Converter

How to use Audio Converter

1. Open Audio Converter — it runs entirely in your browser with no setup.
2. Paste or type your input into the text area, or upload a file where supported.
3. Set any options you need. The result appears in the output panel — there is no upload step and no waiting on a server.
4. Review the output instantly; large inputs are handled locally without lag.
5. Copy the result to your clipboard or download it. Your data never leaves the page.

Why use Audio Converter?

• 100% free with no limits, no sign-up and no watermarks.
• Private by design — your data are processed in your browser and never uploaded to a server.
• Fast and lightweight, with instant results even on a phone or a slow connection.
• Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
• Part of a full media studio suite, so related audio tasks are one click away.

What people use Audio Converter for

• Converting a WAV recording to MP3 before emailing it, because the WAV is ten times the size for no audible benefit.
• Turning an M4A voice memo into MP3 for a device or player that will not read Apple's container.
• Producing a FLAC copy of a master for archiving, and an MP3 copy of the same file for everyday listening.
• Re-encoding a podcast episode to a lower bitrate to bring an oversized file under a hosting limit.
• Converting audio files to MP3 or WAV in a batch, without uploading client recordings to a third party.

Audio Converter: limits and things worth knowing

• MP3, AAC and OGG are lossy: every re-encode discards more detail, and converting MP3 to MP3 at a higher bitrate cannot recover what the first encode threw away.
• WAV and FLAC are lossless. FLAC is roughly half the size of the equivalent WAV with identical audio, which makes it the better archive format.
• Bitrate is the quality control that matters for lossy formats. 192 kbps is transparent for most listening, 320 kbps is the practical ceiling for MP3, and anything below 128 kbps is audible on music.
• Converting from a lossy source to a lossless format produces a large file that sounds exactly like the lossy original. It is useful for editing, not for quality.
• There is no upload limit because there is no upload. Server-side converters cap free file sizes because bandwidth and storage cost them money; this tool never sends the file anywhere, so no quota applies to it.
• The real constraint is your device's memory, not a plan tier. FFmpeg runs here as WebAssembly inside the browser tab, and the whole file plus its output has to fit in the memory that tab is allowed — so a large file can fail on a phone and succeed on a laptop.
• If a large file fails, the tab runs out of memory rather than silently producing a corrupt result. Closing other tabs, using a desktop browser, or trimming the file first are the practical fixes.
• A 64-bit desktop browser with several gigabytes free handles files far larger than the typical free tier of a server-side converter. We deliberately do not publish a single maximum figure, because the honest answer depends on your device and stating one number would be wrong for most people.
• Nothing is queued and nothing is rate-limited. Conversion speed depends on your processor, so a long video takes longer on a phone — but it starts immediately rather than waiting behind other users' jobs.

Supported formats

Reads: MP3, AAC, M4A, WAV, OGG, FLAC, and any audio stream FFmpeg can read. Writes: MP3, AAC, M4A, WAV, OGG, FLAC.

Is it private and secure?

Your privacy is built in. Audio Converter runs completely on your device, so whatever you enter stays in your browser and is never transmitted, logged or stored on any server.

Network activity: none. Nothing is sent and nothing is fetched. This tool makes no network request at all once the page has loaded — which is why it keeps working if your connection drops.

You do not have to take that on trust — our privacy proof page publishes the Content-Security-Policy that enforces it, lists every third party it permits, and shows how to verify the whole claim yourself.

Learn more

Why Browser-Based Tools Are Safer for Your Files — Most online converters upload your files to a server. Client-side tools don't. Here's why that difference matters for privacy.