AIFF to OPUS Audio Converter
Drop your AIFF files — the OPUS audio is generated in your browser in seconds. Multiple files at once, no upload on the fast path.
9,214+ audio files converted
Converting audio to Opus is one of the most common jobs people bring to a browser converter. Modern royalty-free lossy codec that outperforms MP3 and AAC at low bitrates. The standard for WebRTC voice and streaming chat. Because everything here runs locally with WebAssembly, your files never leave your device — there is no upload, no account, and no daily limit on the fast path.
Looking to programmatically convert AIFF to OPUS?
Same engine, available as a JSON API. Drop a file or URL via REST and get the converted audio back — no browser, no UI, no rate limits on paid tiers.
Fast response on common audio pairs
Webhook delivery for batch jobs
Dozens of audio format pairs supported
AIFF vs OPUS: how they compare
The numbers and capabilities at a glance, so you know what you're trading.
AIFF
- Year released
- 1988
- Compression
- Uncompressed (PCM)
- Lossless
- Yes
- Channels
- Multichannel
- Player support
- Apple ecosystem
- Best for
- Editing & mastering on Mac
Opus
- Year released
- 2012
- Compression
- Lossy
- Lossless
- No
- Channels
- Multichannel
- Player support
- Wide
- Best for
- Voice & low-bitrate streaming
Heads up before converting to Opus
What this specific conversion changes about your audio.
Converting AIFF to Opus discards audio data
AIFF is lossless, but Opus is lossy — this conversion permanently throws away part of the signal to save space. Keep your AIFF file as the master and use the Opus copy for sharing or playback.
Best practices for Opus
Small choices that keep your output sounding right.
- Play the first converted file before batch-converting the rest, so you catch a wrong setting early.
- For Opus, choose a bitrate that fits the use: 192–256 kbps keeps most music transparent, 320 kbps for archival-grade lossy.
- Check that title, artist, album and cover art survived the conversion; some players cache old tags.
When NOT to convert to Opus
Cases where a different format serves you better.
When you need an editable master
If you might re-edit or re-export later, keep the lossless AIFF original and skip flattening it to Opus. Lossy targets are for delivery, not for archiving the source of truth.
When the file must play on older devices
Opus is not supported everywhere (Wide). For old phones, car stereos, or legacy software, MP3 or AAC is a safer choice than Opus.
The importance of a good audio conversion
Why getting AIFF → OPUS right matters more than you think.
Frequently asked
The basics everyone asks before dropping a track.
Convert AIFF to other formats
Convert other formats to OPUS