AIFF to AIFF Converter

AIFF vs AIF — Are They Even Different?

Short answer: no. .aiff and .aif are two extensions for the exact same format — Apple's Audio Interchange File Format. The bytes inside are identical: same FORM/AIFF container, same uncompressed PCM samples, same big-endian byte order. Converting AIFF to AIF just relabels the file (and rewrites a clean header) — there is no quality change, no meaningful size change, and no new compatibility. The only honest reason to do it is a strict tool or older system that pattern-matches on the literal three-letter .aif extension and rejects .aiff.

Side-by-side Comparison

The internal AIFF FORM/COMM/SSND chunk structure, the magic bytes, and the PCM byte order are the same in both. The only meaningful difference is the extension string itself.

When to Pick AIFF

• You are working in macOS, GarageBand, or Logic Pro, where .aiff is the spelling Apple's own tools write and expect.
• You want the longer, unambiguous form that reads as "Audio Interchange File Format" at a glance.
• Your collaborators already exchange .aiff without issue and you have no reason to shorten it.

When to Pick AIF

• A strict upload form, library importer, sampler, or older media player whitelists .aif and rejects .aiff as "unknown," even though the contents are valid.
• You are working on an 8.3 filename system or with legacy Windows tooling that expects a three-letter extension.
• You are standardizing a mixed library to the shorter .aif form so batch operations and search filters stay predictable.

How to Convert AIFF to AIF

1. Upload Your AIFF File: Drag and drop your .aiff file, or click "Add Files" to browse. The page also accepts .aif directly, since both extensions point at the same format. Batch is supported, so you can drop in a whole folder.
2. Keep the Audio Codec on PCM 16-bit Big Endian: This is the default and the native AIFF byte order, so the output is bit-identical to a 16-bit PCM source. Leave it as-is for a true rename; only change it (to PCM 24-bit, FLAC, or mu-law) if you actually want a different payload.
3. Set Audio Sample Rate, Audio Channel, and Trim (Optional): Leave Sample Rate and Channel on "Original" to copy the source exactly — this keeps the conversion lossless. Use Trim (start time + duration) only if you want to export a section.
4. Convert and Download: Click Convert and save your .aif. No sign-up, no watermark.

If you actually need a smaller or more portable file rather than a rename, see AIFF to MP3 (lossy, far smaller), AIFF to FLAC (lossless, ~50% smaller), or AIFF to WAV (the modern PCM container). To go the other way, use AIF to AIFF.

Frequently Asked Questions

Is AIF a lower-quality or compressed version of AIFF?

No. .aif and .aiff are the same Audio Interchange File Format with the same uncompressed PCM audio inside. There is no quality tier, no built-in compression difference, and no "lite" version — the three-letter .aif carries exactly the same lossless audio as the four-letter .aiff. The distinction is purely the extension string, a leftover from the DOS era when filename extensions were limited to three characters.

Will I lose any audio quality converting AIFF to AIF?

No. With the default PCM 16-bit Big Endian codec and Sample Rate and Channel left on Original, the audio data is bit-for-bit identical to the source. In our testing, the decoded PCM stream of an .aif output hashed identically to the .aiff input at default settings — the only change is the file extension and a freshly written header. Quality only changes if you deliberately switch to a compressed codec or alter the bit depth, sample rate, or channel count.

Will the converted AIF file be smaller than the AIFF?

Practically no. Uncompressed PCM at the same bit depth, sample rate, and channel count produces the same payload size whether the file ends in .aif or .aiff — a 5-minute 16-bit / 44.1 kHz stereo clip is roughly 50 MB either way, give or take a few hundred header bytes. If you genuinely need a smaller file, convert to AIFF to MP3 for a large lossy reduction or AIFF to FLAC for roughly half the size while staying lossless.

Can't I just rename the file from .aiff to .aif myself?

For default uncompressed PCM, usually yes — a manual rename produces a working .aif because the format inside is unchanged. The converter is still useful when you want a fresh, clean header with no stale chunks, when you are batch-processing many files at once, when the source has unusual chunks you want normalized, or when you simultaneously want to change codec, bit depth, sample rate, or channel count.

Will loop points, markers, and metadata survive the conversion?

The PCM audio transfers bit-perfectly, and because both extensions use the same FORM/AIFF container, AIFF marker and instrument chunks (MARK, INST for loop points) and text chunks (NAME, AUTH, ANNO) carry over too. Application support for these chunks varies, so if you rely on embedded loop data, verify it in your sampler or DAW after conversion.

How long are my files stored on your servers?

Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion. There is no sign-up and no watermark, and your files are never shared or made public.