WMA to OGA Converter

How to Convert WMA to OGA Online

1. Upload Your WMA File: Drag and drop, or click "+ Add Files" to pick WMA files from your device. Batch uploads are supported — drop a whole folder of WMA tracks and they queue with the same settings.
2. Pick a Codec and Quality Preset: Default is Vorbis at the Highest preset. Switch the codec to Opus for the best modern efficiency (especially below 96 kbps), to FLAC for lossless archival, or to Speex if you only need very-low-bitrate voice. Quality Preset ranges from Lowest to Highest; for finer control use Constant Bitrate (e.g., 192 kbps for music), Variable Bitrate (e.g., 128–192 kbps for a smaller transparent file), or Custom Bitrate.
3. Set Channels, Sample Rate, and Trim (Optional): Audio Channel defaults to Original; force Mono to halve size for spoken-word material, or Stereo if the source is mono but you want a stereo container. Sample Rate accepts 8000–48000 Hz (44100 Hz matches CD audio, 48000 Hz matches video soundtracks). Trim lets you set a start time and duration in HH:MM:SS.ms to clip the file during conversion. You can also target a Specific File Size if you need the output under a hard cap.
4. Convert and Download: Click "Convert," then download each.oga file. processing runs on our servers — no sign-up, no watermark, files clear when you leave the page.

Why Convert WMA to OGA?

WMA (Windows Media Audio) is a Microsoft codec family first released in August 1999 alongside Windows Media Technologies 4.0. It was widely used inside the Windows ecosystem through the 2000s, but the format is now effectively legacy: Microsoft's own music store dropped WMA downloads in favor of MP3 back in 2011, Windows Media Player is officially "Windows Media Player Legacy" in Windows 11, and macOS, Linux, Android, and iOS have no native WMA decoder. OGA is the modern, open Ogg container (RFC 5334, September 2008) — recommended for any Ogg-encapsulated audio that isn't strictly Vorbis-only or Speex-only — and is maintained by the Xiph.Org Foundation.

• Cross-platform playback — Vorbis-in-OGA plays out of the box in Firefox, Chrome, Edge, Opera, and (since Safari 18.4, early 2025) Safari and iOS Safari. WMA, by contrast, needs third-party tools like VLC or Flip4Mac on Apple platforms.
• Royalty-free, open codec — Vorbis and Opus carry no licensing fees, making them friendly for indie games, podcasts, and open-source software where WMA's Microsoft licensing has always been a barrier.
• Better compression at low bitrates — Opus inside OGA outperforms MP3, HE-AAC, and Vorbis in IETF listening tests at 64–96 kbps (RFC 6716, 2012), so a 96 kbps OGA file usually sounds noticeably cleaner than a 128 kbps WMA.
• Audacity and FFmpeg compatibility — Audacity needs the FFmpeg extension installed to read WMA, but it imports and exports Ogg Vorbis and Opus natively. Pre-converting to OGA skips the FFmpeg setup headache for collaborators.
• Game-engine and embedded use — Unity, Godot, and most browser game frameworks ship Vorbis decoders out of the box. WMA is rarely supported in game engines, so OGA is the de facto choice for music or ambient loops shipped with a game.
• Escape from DRM-protected WMA — only the unprotected portion of a WMA file converts. If your WMA is plain audio (no DRM), this is a one-way ticket off the Microsoft stack. (Microsoft announced deprecation of legacy WMDRM services in September 2024, making old protected WMA files increasingly hard to play.)

WMA vs OGA — Format Comparison

Codec Picker — Which to Choose Inside OGA

Frequently Asked Questions

What's the difference between.oga and.ogg?

RFC 5334 made .oga the recommended extension for audio Ogg files in general, while .ogg is reserved for Vorbis-only Ogg streams for backward compatibility, and .spx for Speex-only. If you pick FLAC or Opus inside the Ogg container on this page, .oga is the technically correct extension. For Vorbis-only audio, .ogg and .oga are interchangeable in practice — most players accept both.

Will the OGA file play on my iPhone or in Safari?

Yes, on current versions. Safari and iOS Safari added Ogg Vorbis support in version 18.4 (early 2025). Older Safari can play Opus and FLAC natively through Core Audio, but Ogg Vorbis specifically required VLC or another third-party app. If your audience may be on older Apple devices, pick Opus or FLAC over Vorbis in step 2.

My WMA file is DRM-protected — can you convert it?

No. WMA files that use WMDRM (typically from old PlaysForSure stores, Zune, or rented audiobooks) refuse to decode without a license server. The converter will fail or return silence on those files. Plain WMA — ripped from your own CDs, recorded with Windows Sound Recorder, or downloaded from sources that never applied DRM — converts normally. Microsoft began deprecating legacy WMDRM services in September 2024, so even original players are losing the ability to play protected WMA.

Why is Opus a better choice than Vorbis in 2026?

Opus (RFC 6716, September 2012) was designed by the IETF as a single codec covering everything from telephony to high-fidelity music, with bitrates from 6 to 510 kbps and ~26.5 ms default latency. IETF listening tests rate Opus higher than MP3, AAC, HE-AAC, and Vorbis at any given bitrate below transparency. The one reason to still pick Vorbis is reach into older players and game engines that pre-date Opus support.

Will conversion change the audio quality?

WMA is a lossy codec, so converting to Vorbis or Opus is a lossy-to-lossy transcode — some quality is lost relative to the original master, though usually not enough to hear if you encode the OGA at a higher bitrate than the source WMA. To preserve everything the WMA already contains, pick FLAC; FLAC is lossless against the WMA decode, but it cannot recover information WMA threw away during the original encode.

What sample rate should I pick?

Set Sample Rate to "Original" unless you have a reason to change it. If the WMA was ripped from CD, that's 44100 Hz; from a video soundtrack, 48000 Hz. Downsampling to 22050 or 16000 Hz can shrink voice-only files without obvious quality loss; upsampling above the source rate never improves quality and just enlarges the file.

Can I trim the audio while converting?

Yes — use the Trim control in step 3 to set a start time and a duration in HH:MM:SS.ms. The output OGA contains only that slice, which is handy for grabbing a specific section of a long lecture or podcast without a second pass through an editor. For more granular editing, convert first and then use a dedicated tool — see Audio Cutter.

What if I want a different output format instead?

WMA is a legacy format and several modern targets are reasonable depending on the use case. For maximum compatibility with podcast hosts and older devices, try WMA to MP3. For lossless archival without the Ogg container, use WMA to FLAC. For Apple ecosystems specifically, WMA to M4A (AAC inside an MP4 container) plays everywhere on iOS and macOS without any third-party software.

Is there a file size limit?

Conversion runs on our servers, so practical limits are set by upload size and connection speed rather than by a server quota. Files up to a few hundred MB convert without issue on most modern machines; very large WMA podcasts or audiobooks (multi-GB) may be slower or hit browser memory caps. There's no account requirement, no watermark, and nothing uploaded to a third-party server queue.