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Audio Converter

Convert your audio files between proof-backed formats with high quality. Our free online audio converter supports MP3, WAV, AAC, OGG, FLAC, M4A, WMA, AIFF, OPUS, AC3, AMR, AU, CAF, MKA, WV, SPX, OGA, DTS, and MP2.

Start Converting View All Formats

✓10 free daily conversions

✓No signup to start

✓No watermarks

Convert Your Audio Files

Upload a audio file, choose an output format, and download the converted result

Daily Limit: /10 Credits

Per File

100 MB

Total Queue

0 B / 500 MB

Daily usage: 0/10 credits0%

Upload Any File

Drag and drop files here or click the button below

ImagesDocumentsVideosAudioArchivesSubtitlesEmail

PNG, JPG, PDF, ZIP, SRT, EML, MP4, MP3 and 300+ formats

Supported Audio Formats

Click on any format to see all available conversion options

Complete Format Support

We publicly expose 342 proven routes across 19 input formats and 19 output formats

Input Formats

19 public input formats

mp3 wav aac ogg flac m4a wma aiff opus ac3 amr au caf mka wv spx oga dts mp2

Output Formats

19 public output formats

mp3 wav aac ogg flac m4a wma aiff opus ac3 amr au caf mka wv spx oga dts mp2

Public Input FormatProven Output Route

Popular Conversions

Quick access to the 12 most commonly used conversions

All Format Conversions

Click on any format tab to see all available conversions from and to that format

MP3 Conversions

18 output formats available

MP3 Converter

Convert MP3 to:

Convert to MP3 from:

+6 more

19 Public Input Formats342 Public RoutesCapability-Gated Links

All Audio Conversions (A–Z)

Browse priority audio conversions below.

Show all 52 conversions

How to Convert Audio Files

Follow these simple steps to convert your files

Upload Your File

Drag and drop your file or click to browse. We support over 300 file formats. 💡 Pro Tip: You can drag and drop multiple files at once!

Choose Output Format

Select your desired output format from our comprehensive list of options.

Convert Instantly

Our powerful servers process your file in seconds with high quality results.

Download Result

Download your converted file immediately. Files are kept for 24 hours.

Audio Converter Features

Practical browser-based conversion features for everyday file jobs

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Convert between 19

Convert between 19 proof-backed audio formats

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Preserve audio quality

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Support for lossless

Support for lossless formats (FLAC)

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Batch convert multiple

Batch convert multiple audio files

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Adjust bitrate and

Adjust bitrate and quality

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Fast cloud-based conversion

About the audio converter

The FreeFast Audio Converter helps you change audiofiles from your browser without installing extra software. Use it for compatibility, sharing, uploading, editing, or preparing a file for another app.

Supported Formats

We support a comprehensive range of audio formats including MP3, WAV, AAC, OGG, FLAC and 14 more proof-backed input formats. Public conversion links are shown only after a route has a verified or supported capability status.

Why Use Our Audio Converter?

Convert between: Convert between 19 proof-backed audio formats
Preserve audio: Preserve audio quality
Support for: Support for lossless formats (FLAC)
Batch convert: Batch convert multiple audio files
Adjust bitrate: Adjust bitrate and quality
Fast cloud-based: Fast cloud-based conversion

Popular Audio Conversions

Some of our most popular audio conversions include:

WAV to MP3 - Convert WAV files to MP3 format
FLAC to MP3 - Convert FLAC files to MP3 format
M4A to MP3 - Convert M4A files to MP3 format
OGG to MP3 - Convert OGG files to MP3 format

How It Works

Converting your audio files is simple:

Upload: Drag and drop your audio file or click to browse
Select Format: Choose your desired output format from the dropdown
Convert: Click convert and wait a few seconds
Download: Download your converted file instantly

Privacy-friendly file handling

Your file is handled for the conversion you request. Uploads and downloads use encrypted transfer, and temporary files are cleared after the processing and deletion window.

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Encrypted transfer

Uploads and downloads use HTTPS/TLS while your file moves between your browser and FreeFast.

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Conversion-only handling

Files are handled for the selected conversion job, not for selling your file contents.

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Auto-delete window

Temporary uploads and converted files are cleared after the processing and deletion window.

Audio guides & how-tos

View all guides →

Audio Converter FAQ

Common questions about our converter

What audio formats can I convert?

We currently expose 19 proof-backed audio formats: MP3, WAV, AAC, OGG, FLAC, M4A, WMA, AIFF, OPUS, AC3, AMR, AU, CAF, MKA, WV, SPX, OGA, DTS, and MP2.

Will the audio quality be affected?

We use high-quality conversion algorithms. For lossless conversions (e.g., FLAC to WAV), quality is fully preserved. For lossy formats, you can choose your preferred bitrate.

Can I convert FLAC to MP3 without losing quality?

While MP3 is a lossy format, we offer high bitrate options (320kbps) that preserve most of the audio quality from FLAC files.

Is there a file size limit?

Free accounts can convert audio files up to 1GB per file (guests up to 100MB). This covers full albums and long recordings.

Can I batch convert multiple audio files?

Yes! Simply upload multiple files and they will all be converted simultaneously. Download them individually or as a zip archive.

Ready to Convert Your Audio Files?

Start with 10 free daily conversions. No signup required for your first file jobs.

Start Converting