AIFF to OGA Converter

Convert AIFF to OGA Online

AIFF is Apple's uncompressed PCM format — bit-perfect but huge, around 10 MB per minute of CD-quality stereo. Converting to OGA (the audio-only Ogg extension) encodes that audio as Vorbis by default, a royalty-free lossy codec that shrinks the file by roughly 80–90% with quality that's transparent for most listening. It's the right move when you want a small, open, web-and-Linux-friendly file from a bulky AIFF master.

How to Convert AIFF to OGA

1. Upload Your AIFF File: Drag and drop or click "Add Files" to select AIF or AIFF audio — GarageBand exports, Logic Pro bounces, Pro Tools renders, or Mac CD-rips. Batch is supported, so drop in a whole album or folder of stems at once.
2. Pick a Quality Preset or Bitrate: OGA encodes Vorbis by default. Leave it on the Quality Preset (Highest through Lowest) for a quick balanced result, or open Custom Bitrate / Constant Bitrate (64, 96, 128, 192, 256, 320 kbps) / Variable Bitrate for precise control. Higher quality means a bigger file that sits closer to the source; lower means a smaller file with more discarded detail. You can also use the Audio Codec dropdown to choose Opus (better below ~96 kbps), FLAC (lossless inside Ogg), or Speex (legacy speech) instead of Vorbis.
3. Set Sample Rate, Channels, and Trim (Optional): Match the source with Audio Sample Rate (typically 44.1 kHz for music, 48 kHz for video audio) or downsample for speech, set Audio Channel to stereo or mono (mono roughly halves size), and optionally Trim a start time and duration in seconds or HH:MM:SS.sss.
4. Convert and Download: Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and download individually or as a ZIP — no sign-up, no watermark.

AIFF vs OGA — Format Comparison

Frequently Asked Questions

Will converting AIFF to OGA reduce audio quality?

Yes — AIFF is uncompressed PCM (lossless), so encoding to Vorbis or Opus is lossy by definition: some inaudible information is discarded to make the file far smaller. This is a one-way step — you can't recover the original PCM detail from the OGA, and re-expanding it later (OGA back to AIFF) just wraps the already-lossy audio in a big container without restoring anything. At 192–256 kbps Vorbis the loss is inaudible to almost everyone; at 96 kbps you may notice softer cymbals on dense music. Keep your AIFF master if you need an archival or editing copy. If you want a smaller file with zero quality loss, use AIFF to FLAC instead — FLAC is lossless and typically lands around 50–60% of the AIFF size.

Why is the OGA so much smaller than the AIFF?

AIFF stores every PCM sample at full bit depth — 16 or 24 bits times 44,100 samples per second times 2 channels works out to about 1411 kbps for CD-quality stereo. Vorbis uses psychoacoustic modeling to keep only what your ears can detect, often around 128–256 kbps. That's roughly an 80–90% size reduction at quality that stays transparent for most listeners around 192 kbps and up.

Should I pick Vorbis or Opus inside the OGA?

For music and game audio at 128 kbps and above, Vorbis is the right default — it's the historical Ogg codec, every game engine (Unity, Godot, Unreal) and Linux media player handles it without surprises, and it's transparent at 192–256 kbps. For voice notes, podcasts, and anything under 96 kbps, Opus wins decisively — it's the most efficient codec available today and sounds clean down to about 32 kbps mono. In our testing, a 4-minute 44.1 kHz stereo AIFF (40 MB) encoded to Vorbis at 192 kbps produced a file around 5–6 MB with no audible difference on headphones.

Will iPhones, iTunes, or Apple Music play the OGA file?

Apple's Music app, Files preview, and iTunes do not decode .oga natively, so a converted file won't play through those apps. The exception is the browser: Safari added Ogg Vorbis and Opus support in version 18.4 (macOS 15.4 / iOS 18.4, March 2025), so an <audio src="track.oga"> tag now works in recent Safari, alongside Firefox, Chrome, and Edge. If your audience is on older Apple devices or needs playback in the Music app, convert to AIFF to MP3 for universal compatibility instead.

Why is .oga different from .ogg and .opus?

All three are Ogg containers from Xiph.Org. .ogg is the original generic extension and can carry Vorbis audio or Theora video; .oga was added later to explicitly mark audio-only Ogg files so an OS or browser knows there's no video track; .opus is reserved for Ogg files carrying Opus specifically. The audio bytes are identical for a given codec — only the extension and the OS hint differ. Some Linux file managers and Wikimedia upload tools prefer .oga for audio.

How long do you keep my uploaded AIFF and the converted OGA?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion. There's no sign-up, no watermark, and your files are never shared or made public. If you need a permanent copy, download the OGA right after it finishes.