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Free Online Audio Converter

Convert audio between MP3, WAV, OGG, AAC, and FLAC — free, fast, and completely private.

Runs entirely in your browser — your files are never uploaded to a server.

Last updated

This tool processes your file entirely in your browser using WebAssembly. Nothing is uploaded to our servers.

How It Works

1. Choose Your File

Drag & drop or select the file you want to work with.

2. Processed in Your Browser

Everything happens locally on your device — your file is never uploaded anywhere.

3. Download Your Result

Get your finished file instantly, ready to save or share.

About Free Online Audio Converter

Different platforms and devices expect different audio formats — converting solves compatibility issues without needing to re-record anything, similar to how image or video format conversion works.

MP3 remains the most broadly compatible choice when you’re unsure what a destination requires, though WAV offers uncompressed, lossless quality at the cost of significantly larger file size.

Converting between two lossy formats (like MP3 to another compressed format) can introduce a small amount of additional quality loss with each conversion — converting directly from your original source in one step avoids compounding this.

Frequently Asked Questions

How to convert audio to MP3 for free?

Choose your audio file, select MP3 as the output format and download the result. It is free with no signup, and the conversion happens in your browser. MP3 output uses high-quality variable bitrate, and converting an already lossy file cannot restore lost detail.

How to convert audio to MP3 on iPhone?

Open the page in your iPhone browser, tap to choose an audio file from Files, pick MP3 and download the result. No app is needed. The first use downloads a video engine of about 30MB, which your browser then caches.

How to convert audio to MP3 on Mac?

Open the page in a browser on your Mac, choose the audio file, select MP3 and download the converted file. Nothing needs installing, and the file is processed locally rather than uploaded.

Which audio formats can I convert to?

You can convert to MP3, WAV, OGG, AAC (M4A) or FLAC. The input can be any audio file your browser lets you select. Converting to FLAC or WAV gives larger files, but it will not improve a source that was already compressed.

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