OPUS Converter: MP3, FLAC, WAV

Convert OPUS, FLAC, OGG, MP3, WAV, AAC and M4A correctly, on your device, using a real encoding engine.

Most converter apps fail silently on OPUS and FLAC because iOS has no native decoder for these formats. OPUS Converter uses FFmpeg — the same open-source engine trusted by VLC, ffmpeg.org, and professional studios to decode and re-encode every file with true accuracy.


WHATSAPP VOICE NOTES

WhatsApp sends voice messages as .opus files. Open them in OPUS Converter and export to MP3 or AAC in seconds — play them on any device, forever.
ALL 7 FORMATS
Import & export: OPUS · FLAC · OGG (Vorbis) · MP3 · WAV · AAC · M4A
Bit rate: 64 – 320 kbps
Sample rate: 22,050 – 96,000 Hz

PREVIEW BEFORE YOU EXPORT

After conversion, tap play on any file in History. Hear it right inside the app. Confirm quality before sharing.


BATCH CONVERT

Add multiple files, pick your output format, tap Convert once. A live progress bar tracks every file.


PRIVATE BY DESIGN

Other converter apps track your location, device ID, and usage to run third-party ads. OPUS Converter collects nothing — zero ads, zero sign-up, zero tracking. Our App Store privacy label is "Data Not Collected." You can verify this yourself before you download.

SHARE ANYWHERE

Export to Files app, AirDrop to Mac, share via Messages, or open in any compatible app. Converted files land in the "OPUS Converter" folder in your Documents.

9 LANGUAGES
English · Spanish · French · German · Italian · Portuguese · Russian · Japanese · Simplified Chinese

FREE TO TRY · PRO TO EXPORT
Convert and preview for free no account, no time limit.
Unlock file export with OPUS Converter Pro:

No hidden fees. No ads. No tricks. Ever.
•⁠ ⁠Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
•⁠ ⁠Privacy Policy: https://docs.google.com/document/d/1Y4Mhhyeza2RJlpv2dAGQ2yM7A4Lisr6Y8B_jnYcvg-c/edit?usp=sharing