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AIFF to FLAC converter

Convert AIFF to FLAC in your browser. No upload and no account: the file never leaves your device, so the only size limit is your device’s memory.

I want FLAC
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Leave both at 0 for the whole file.

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Bytes of your files sent anywhere: 0 B

Related conversions

Need it the other way round? Convert FLAC to AIFF

Other ways to convert AIFF

Convert other formats to FLAC

Read more about the AIFF format and the FLAC format, or see every audio tool and all audio conversions.

Should you convert AIFF to FLAC?

You want to archive AIFF recordings losslessly at around half the size.

A lossless move: AIFF and FLAC both keep every sample, so the sound is identical and you can convert back at any time.

AIFF is uncompressed audio, Apple’s equivalent of WAV; FLAC is lossless audio at roughly half the size of WAV. Use FLAC to archive music and recordings you may want to convert again later.

AIFF and FLAC compared
Property AIFF FLAC
Compression Uncompressed Lossless
Typical quality 16-bit PCM lossless, 16 or 24-bit
Support Opens almost everywhere Opens almost everywhere
Best for Audio production on Macs, and importing into Logic or GarageBand Archiving music and recordings without losing anything
Introduced 1988 2001

How to convert AIFF to FLAC

  1. 01

    Add your AIFF

    Drop your AIFF file onto the box, or click to choose it. It is read from your disk and stays there.

  2. 02

    Check the settings

    The output is already set to FLAC. Change the bitrate if you want to; the defaults suit most files.

  3. 03

    Save the FLAC

    Press convert and save the FLAC. Several files come back together as a ZIP.

What changes when AIFF becomes FLAC

Identical sound

Both formats are lossless, so the audio isn’t changed at all. Only the file size and which apps open it differ.

A one-time engine download

AIFF is decoded by FFmpeg compiled to WebAssembly, a 31 MB download the first time. After that it is cached, and the conversion never leaves your device.

Expect a smaller file

FLAC usually stores the same content in less space than AIFF. AIFF: About 10 MB a minute at CD quality. FLAC: About 5–7 MB a minute for music.

This page is put together from our notes on each format, choosing only what is true of AIFF and FLAC, so every pairing states the same facts the same way. How these pages are made.

Why it doesn’t upload

Recordings are often private: interviews, voice notes, unreleased music. Your browser can decode and encode audio itself, so there is no reason to send it anywhere.

How to check for yourself

Worth knowing

  • About the AIFF. AIFF stores samples in the opposite byte order to WAV; tools that assume WAV turn it into loud static.
  • About the FLAC. FLAC made from an MP3 is lossless only in name: it perfectly preserves an already lossy recording, at five times the size.
  • MP3, WAV, M4A, OGG, Opus and FLAC are converted by your browser directly. WMA, AMR, APE, AC3 and the other specialist formats use the FFmpeg engine, a one-time 31 MB download.

Questions

Does converting AIFF to FLAC lose quality?

No quality is lost converting to FLAC.

Will an FLAC play in my car or on my phone?

FLAC opens almost everywhere: most modern players, Android and recent iPhones; some car stereos and older apps don’t.

Read more about this

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