Convert OPUS to FLAC

OPUS to FLAC converter that runs entirely in your browser. 100% free, no signup, no upload — your files never leave your device. One-click batch conversion.

Conversions

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All file types supported

About formats

OPUS

Opus is a versatile, royalty-free audio codec standardized by the IETF and developed by the Xiph.Org Foundation and Skype. It is designed to handle both speech and music efficiently across a very wide range of bitrates, and is now the state-of-the-art codec for real-time communication and streaming.

Developer: IETF / Xiph.Org Foundation / Skype
Initial release: 2012
Compression: Lossy
Color depth: up to 24-bit
Transparency: No
Animation: No

Best for

Real-time voice and video calls
Low-latency streaming audio
Efficient speech and music delivery
WebRTC communication
Bandwidth-flexible audio streaming

Pros

+Handles both speech and music efficiently
+Very wide bitrate range
+Low latency for real-time use
+Royalty-free and open

Cons

−Lossy compression
−Less established in music distribution
−Some older players lack support
−No lossless mode

FLAC

FLAC (Free Lossless Audio Codec) is an open-source lossless audio format that compresses audio without discarding any information, typically reducing file size by 50-60% compared to WAV while allowing perfect reconstruction of the original signal. FLAC is the preferred format for high-fidelity music archives and audiophile collections.

Developer: Xiph.Org Foundation
Initial release: 2001
Compression: Lossless
Color depth: up to 24-bit
Transparency: No
Animation: No

Best for

High-fidelity music archives
Audiophile music collections
Lossless audio preservation
Mastering and audio production
Backing up CD-quality music

Pros

+Lossless compression with perfect reconstruction
+50-60% smaller than WAV
+Open-source and royalty-free
+Supports up to 24-bit depth and multi-track

Cons

−Larger than lossy formats like MP3
−Not ideal for streaming on limited bandwidth
−Less universal device support than MP3
−Some portable players lack FLAC support

How to convert OPUS to FLAC

1
Select OPUS files from your computer, Google Drive, Dropbox, a URL, or by dragging them onto the page.
2
Choose flac — or any other format you need as a result (more than 200 formats supported).
3
Let the file convert, then download your flac file right away.

OPUS vs FLAC

Property	OPUS	FLAC
Compression	Lossy	Lossless
Color depth	up to 24-bit	up to 24-bit
Multi-track	Yes	Yes
DRM support	No	No
Open format	Yes	Yes

When to use OPUS vs FLAC

OPUS

Real-time voice and video calls
Low-latency streaming audio
Efficient speech and music delivery
WebRTC communication
Bandwidth-flexible audio streaming

FLAC

High-fidelity music archives
Audiophile music collections
Lossless audio preservation
Mastering and audio production
Backing up CD-quality music

Use cases for OPUS → FLAC

Real-time voice and video calls
Low-latency streaming audio
Efficient speech and music delivery
WebRTC communication
Bandwidth-flexible audio streaming
High-fidelity music archives
Audiophile music collections
Lossless audio preservation
Mastering and audio production
Backing up CD-quality music

Frequently Asked Questions

Is converting OPUS to FLAC free?

Yes. This OPUS → FLAC converter runs entirely in your browser and is completely free — no account, no credits, no watermark.

Which devices and platforms can I use to convert OPUS to FLAC?

Any modern device with a current web browser: Windows, macOS, Linux, Android, iPhone and iPad. There is nothing to install — the conversion happens locally.

Are my OPUS files uploaded to a server?

No. Files never leave your device. The entire OPUS → FLAC conversion runs locally in your browser, so your data stays private.

Can I convert multiple OPUS files at once?

Yes — batch conversion is supported. Add as many OPUS files as you like and convert them to FLAC in one pass, then download the results together.

What is the maximum file size?

There is no fixed server-side limit because the conversion happens in your browser. Practical limits depend on the available memory and CPU of your device.

Will converting OPUS to FLAC lose quality?

No. FLAC is a lossless format (or used in a lossless mode here), so the original data from your OPUS file is preserved bit-for-bit in the converted result.

Does FLAC support transparency?

No — FLAC has no alpha channel. Transparent areas of your OPUS file will be filled with a solid background colour in the converted file.

Will the converted FLAC file be larger than the OPUS?

Usually yes — converting from a lossy format to a lossless one means the FLAC file preserves full detail and therefore grows compared to the OPUS original. Expect a roughly 30–60% size increase for typical content.

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FREE

100% Free

No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.

SIGNUP

No Signup Required

Start converting immediately without creating an account or sharing email address.

PRIVACY

Private & Secure

Your files never leave your device. All processing is completed locally for maximum privacy.

BATCH

Batch Conversion

Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.

LOCAL

Runs in Browser

Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.

FORMATS

200+ Formats

Supports a wide variety of formats including images, documents, audio, video, and more.

USER REVIEWS

Convert OPUS to FLAC Quality Rating

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