AIFF to Opus Converter

Convert AIFF studio masters into Opus — the modern web-and-voice codec that beats MP3 by a wide margin at low bitrates. Half the file size, better quality, full browser support.

AIFFOpus

Drop your AIFF file here or click to browse

AIFF (.aiff) · Max 20 MB

Free — 10-second preview, 5 conversions/month. Upgrade for unlimited

What is AIFF?

Apple's uncompressed format. Similar to WAV but with better metadata support. Used in professional Mac audio workflows.

What is Opus?

Modern open-source codec. Best quality-per-bit of any lossy format. Used by Discord, WebRTC, and modern browsers.

Why Convert AIFF to Opus?

AIFF is studio quality but enormous. When the destination is a web embed, Discord upload, podcast feed (modern hosts that accept Opus), or any voice/messaging app, Opus is the right target. Opus is the modern codec — it beats MP3 by a wide margin at low bitrates (a 64 kbps Opus voice file sounds better than a 96 kbps MP3), supports both voice and music modes automatically, and is the codec WhatsApp, Discord, Zoom, and most VoIP apps use under the hood. Browser support is universal (Chrome, Firefox, Safari, Edge all play Opus natively in HTML5 audio). The conversion from AIFF preserves quality well because the encoder has clean uncompressed input. Pick 96–128 kbps for music (transparent at 128 kbps for almost any source). Pick 32–64 kbps for voice content — Opus is exceptional for speech at low bitrates. Pick 24 kbps for archival voice or extreme size constraints (still intelligible). Files end up 2–10× smaller than equivalent MP3, dramatically smaller than the AIFF source.

Who Uses This Converter

Discord and Telegram uploads

Discord file size limits favour Opus — pack more audio in per upload. Telegram voice messages use Opus natively.

Web audio (HTML5)

Opus delivers better quality than MP3 at half the bitrate. Page-load critical sites use Opus for music previews and audio embeds.

Modern podcast distribution

Some modern podcast hosts and players support Opus. Smaller bandwidth, faster loads — useful for high-volume shows.

Frequently Asked Questions

What's special about Opus versus MP3 or AAC?

Opus dynamically switches between voice and music modes, achieves better quality than MP3 and AAC at low bitrates (32–96 kbps), supports the full audio band (up to 48 kHz sample rate), and has very low latency. It's why WhatsApp, Discord, and Zoom use it for voice. At higher bitrates (128+ kbps), Opus and AAC are roughly equivalent.

What Opus bitrate should I use?

128 kbps for music (transparent on almost any source). 96 kbps for everyday music with size constraints. 64 kbps for high-quality voice. 32 kbps for everyday voice/podcast. 24 kbps for extreme size constraints (still intelligible). Below 16 kbps starts to sound like a phone call.

Where does Opus play?

Native HTML5 audio in Chrome, Firefox, Safari, Edge. Discord, WhatsApp, Telegram (their voice messages are usually Opus). VLC, Foobar2000, MusicBee, modern Android. Native iOS Safari supports Opus in WebRTC and HTML5 audio (recent versions). Apple Music does NOT support Opus — use M4A/AAC for that.

Will AIFF metadata transfer to Opus?

Opus uses Vorbis comments for metadata (same as OGG and FLAC). Title, artist, album, year, and album art transfer if present in the AIFF. Track-level metadata works; AIFF's chunk-level metadata may not map directly.

Is Opus better for voice or music?

Both — that's the design goal. Opus beats MP3 and AAC at low bitrates for voice (32–64 kbps range). For music, Opus matches AAC quality at 128+ kbps. The encoder switches modes automatically based on content, so you don't need to specify.

How much smaller is Opus versus the AIFF source?

Roughly 50–100× smaller. A 100 MB AIFF (10 minutes stereo CD quality) becomes a 1–2 MB Opus at 128 kbps. The huge size reduction is why Opus dominates messaging and web audio.