Audio Converters - Convert Audio Online Free | MiConvert
API Tools Formats Try Pro Sign In

Audio Converters

Convert audio files between all popular formats

Convert audio between MP3, WAV, FLAC, AAC, OGG and more — free and right in your browser.

Drop your files here

or click to browse

Supports 1000+ formats • Max file size: 100MB

Available Tools

Browse by Format Family

Lossless & Uncompressed Audio

FLAC, ALAC and APE compress audio without discarding samples, so decoding restores the original waveform bit for bit. WAV and AIFF store that waveform uncompressed, around 10MB per stereo minute at CD rates. Encoding any of them to MP3, AAC or Opus is one-way — the discarded detail cannot be recovered by converting back.

Lossy & Streaming Formats

MP3, AAC, Ogg Vorbis and Opus all discard detail the ear is least likely to notice. Converting between them decodes and re-encodes, so quality drops a second time even when the bitrate goes up; work from the original whenever you still have it.

Apple Audio & Ringtone Formats

M4A, M4B and M4R are all MPEG-4 containers holding AAC audio — the extension signals intent rather than a different codec: M4B marks an audiobook with chapter support, M4R an iPhone ringtone. CAF is Apple's Core Audio Format, used where a file may exceed what WAV's 32-bit size field can address.

Legacy, Broadcast & Telephony Formats

WMA is Microsoft's Windows Media codec, AC3 is Dolby Digital as used on DVD and broadcast, and AMR is the narrowband speech codec from mobile voice recording — 8kHz mono, tuned for speech rather than music.

About Audio Converters

Upload an audio file above and choose your output format. Convert lossless FLAC or WAV into compact MP3 for your phone, turn voice memos into shareable files, or prepare tracks for editing software. Conversions preserve audio fidelity wherever the format allows, need no software install, and never require an account. Whether you're saving space, fixing a compatibility issue, or extracting audio for a project, every tool below is free, secure, and works on any device. Files are processed privately and removed automatically after conversion.

MiConvert covers MP3, WAV, FLAC, AAC, OGG, M4A and WMA in both directions. Musicians use it to move session recordings between DAWs that expect different formats, podcasters convert WAV masters down to MP3 for smaller distribution files, and anyone with an old voice memo or ripped CD track uses it to get a format their phone or car stereo will actually play.

Frequently Asked Questions

How do I convert an audio file?

Drop your file into the upload box above (or click to browse), then choose the format to convert to. The result downloads automatically.

Is audio conversion free?

Yes. All audio converters are free with no sign-up required. Pro adds larger files and batch conversion.

Will converting change the sound quality?

Converting to a lossless format like WAV or FLAC preserves full quality. Lossy formats like MP3 and AAC use high-bitrate settings to keep audio clear at a smaller size.

Can I extract audio from a video?

Yes. Use our video converters (for example MP4 to MP3) to pull the audio track out of a video file.

Are my files safe?

Yes. Files are transferred securely, processed privately, and deleted automatically after conversion.

What's the difference between FLAC and MP3?

FLAC is lossless — it stores the audio with no quality loss but at a larger file size. MP3 is lossy and compresses the audio much smaller, which is ideal for phones and streaming where storage and bandwidth matter more than absolute fidelity.

Why won't my WMA or M4A file play on my device?

WMA is a Windows Media format with limited support outside Windows, and M4A is common on Apple devices but not universally recognized. Converting either to MP3 or WAV makes the audio playable on virtually any device or app.