To convert FLAC to Opus, choose your FLAC audio files above, adjust the options if needed and press "Convert to Opus". The Opus downloads instantly: free, with no sign-up, and the file never leaves your device.
About the FLAC to Opus Converter
Need to turn a FLAC file into Opus? This free converter changes FLAC audio files into Opus in a few seconds, right in your browser. People usually convert because FLAC files are big and many phones and car stereos will not play them, while Opus gives you tiny, great-sounding Opus audio. Opus files open in WhatsApp, Telegram, Discord, Chrome, Firefox, VLC and Android.
Audio and video are processed by FFmpeg compiled to WebAssembly, the same open-source engine behind VLC and HandBrake, running inside your browser tab. Because everything happens on your own device, your audio files are never uploaded, stored or seen by anyone else, which makes it safe for voice recordings, interviews and unreleased music.
What to expect: the sample rate and channels are kept, and you can pick the bitrate; the processing engine (about 30 MB) is downloaded once and then cached by your browser.
How to use the FLAC to Opus Converter
- Click "Choose files" or drag your FLAC audio files onto the box. You can add several at once.
- Choose the Opus bitrate: 128 kbps for speech, 192 kbps for music or 320 kbps for the best quality.
- Press "Convert to Opus". The conversion runs on your device and shows its progress.
- Download each Opus file, or use "Download all (ZIP)" when you converted several.
- Open the result in WhatsApp or Telegram to check it; your original FLAC is never changed.
Tips & benchmarks
- Opus sounds great at low bitrates: 64 kbps for speech and 128 kbps for music.
- FLAC is lossless and Opus is not, so keep your original FLAC as the master copy and use the Opus for sharing.
- As a guide, one minute of audio at 128 kbps is about 1 MB, and at 320 kbps about 2.4 MB.
- Keep the file name simple (letters, numbers and hyphens) if you plan to upload the Opus to a website or government portal.
Frequently asked questions
How do I convert FLAC to Opus?
Click "Choose files", select your FLAC audio files, adjust the options if you want, and press "Convert to Opus". The Opus downloads immediately; with several files you can download everything as one ZIP.
Is this FLAC to Opus converter free and safe?
Yes. It is completely free, with no sign-up, no daily limit and no watermark. The conversion runs inside your browser, so your audio files never leave your phone or computer and nothing is stored on News Appite's servers.
Does converting FLAC to Opus lose quality?
Opus is a lossy format, so the audio is re-compressed. At 192 kbps or more most listeners cannot hear a difference from the source.
Can I convert several FLAC files at once?
Yes. Add as many FLAC files as you like; they are converted one after another and you can download them individually or together as a ZIP.
Does it work on iPhone, Android and Mac?
Yes. The converter works in any modern browser, including Chrome, Safari, Edge and Firefox, on Android, iPhone, iPad, Windows, macOS and Linux. No app is needed. The audio and video engine is a larger download the first time, so Wi-Fi is recommended.
What is the difference between FLAC and Opus?
FLAC (Free Lossless Audio Codec) is a lossless compressed audio best suited to lossless music libraries, hi-res downloads and archiving CDs. Opus (Opus audio) is a modern low-bitrate audio best suited to voice notes, podcasts, VoIP and the smallest good-sounding audio files.
Is there a file size limit?
There is no upload limit, because nothing is uploaded. The practical limit is your device's memory: files of a few hundred megabytes work on most computers, and phones handle smaller files comfortably.
How do I convert FLAC to Opus without losing quality?
Pick 256 or 320 kbps. Re-encoding always loses a tiny amount of data, but at these bitrates the difference is inaudible for almost everyone.
How do I convert FLAC to Opus on Android or mobile?
Open this page in Chrome, tap "Choose files", select the FLAC from your gallery or file manager and tap "Convert to Opus". The converted file is saved in the Downloads folder, ready to share on WhatsApp or upload.
How do I convert FLAC to Opus on a Mac?
Open this page in Safari or Chrome, drop the FLAC files onto the upload box and click "Convert to Opus". It works the same on Intel and Apple silicon Macs.
Can I bulk convert FLAC files to Opus?
Yes. Select or drag in as many FLAC files as you like; they are converted one after another and you can download them together as a single ZIP.
FLAC ko Opus kaise kare?
Is page par "Choose files" dabaiye, apni FLAC file chuniye aur "Convert to Opus" par click kijiye. Opus file turant download ho jaati hai. Ye bilkul free hai, sign-up nahi chahiye, aur aapki file kisi server par upload nahi hoti.
FLAC vs Opus: format comparison
| FLAC | Opus | |
|---|---|---|
| Full name | Free Lossless Audio Codec | Opus audio |
| Type | Lossless compressed audio | Modern low-bitrate audio |
| Created by | Xiph.Org Foundation, 2001 | IETF, 2012 (RFC 6716) |
| Compression | Lossless | Lossy |
| File extension | .flac | .opus |
| MIME type | audio/flac | audio/ogg; codecs=opus |
| Best for | Lossless music libraries, hi-res downloads and archiving CDs | Voice notes, podcasts, VoIP and the smallest good-sounding audio files |
| Opens in | VLC, foobar2000, Android, Windows 10+, macOS and most hi-fi players | WhatsApp, Telegram, Discord, Chrome, Firefox, VLC and Android |
What is a FLAC file?
FLAC compresses audio without losing a single bit, usually to 50–60% of the WAV size. Audiophiles, Bandcamp and hi-res stores use FLAC for CD-quality and better downloads.
What is a Opus file?
Opus is an open audio codec standardised by the IETF in 2012. It beats MP3 and AAC at low bitrates and is used for WhatsApp voice notes, Discord, Zoom-style calls and WebRTC.
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