Free Online Audio Converter
Convert audio between MP3, AAC, OGG, WAV, FLAC, M4A, and OPUS formats. Private, instant, no account needed.
Drag & drop your file here, or
Max 100 MB • Max 10 min duration • Max 1080p
How to Convert Audio Online — 3 Steps
Server-side FFmpeg handles the transcoding at high quality. No plugins or software installation required.
Upload your audio file
Select any audio file — MP3, AAC, WAV, FLAC, OGG, M4A, OPUS, or AIFF — up to 100 MB from your device.
Select the output format
Choose your target format. Use MP3 for broad compatibility, FLAC for lossless, or OPUS for low-bitrate streaming with excellent quality.
Download your converted file
Conversion completes in seconds. Download and use your audio immediately. Files are deleted automatically after 60 minutes.
Supported Audio Formats
Convert between all major audio formats — from universal MP3 to lossless FLAC and modern OPUS.
Frequently Asked Questions
What is the best audio format for streaming platforms?
Spotify and Apple Music ingest FLAC or WAV masters and transcode them internally. For direct delivery to listeners, MP3 (320 kbps) and AAC (256 kbps) are widely accepted and produce high quality at manageable file sizes.
Will converting from MP3 to FLAC improve the quality?
No — converting a lossy format like MP3 to FLAC creates a lossless container around already-compressed audio. The quality ceiling is set by the original MP3. To get true lossless quality, always start from an uncompressed source like WAV or a camera's original recording.
What is the maximum file size?
The maximum upload size is 100 MB. Audio files are rarely this large — even a 90-minute WAV at CD quality is around 900 MB, so you may need to use a shorter section or a compressed format as input.
Which format should I use for a podcast?
MP3 at 128 kbps (stereo) or 96 kbps (mono) is the standard for podcast distribution. It is universally supported by every podcast directory including Apple Podcasts, Spotify, and Google Podcasts.
Is this tool free forever?
Yes. There are no plans to add paid tiers for the core conversion functionality. Ads may be shown to support server costs.
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