Convert WMA to MP3: Free Audio Converter
Convert Windows Media Audio to MP3 format. Universal compatibility for all devices. Free online converter.
WMAに対応
アップロードすることで、これらのファイルの権利を有していること、および利用規約に同意することを確認したものとみなされます。
変換設定: ファイルを追加すると調整できます
安全な転送
HTTPS暗号化アップロード
プライバシー優先
ゲストのファイルは約2時間で自動削除
登録不要
すぐに変換を開始
どこでも動作
あらゆるブラウザ、あらゆるデバイス
About WMA files
WMA is Windows Media Audio, a format from Microsoft. Windows Media Player used it for CD rips for many years, so old music folders and old voice recorders are often full of WMA files.
People convert WMA to MP3 because phones, Macs, car stereos and most modern apps do not play WMA. MP3 keeps the collection usable on any device.
How we convert WMA to MP3
- Encoder mode
- MP3 at variable bitrate quality level 2, about 190 kbps average.
- Tags
- You can set title, artist, album, year and genre before you convert.
- Sample rate
- Kept from the WMA file unless you choose another one.
Common problems and fixes
The WMA file will not convert.
WMA files bought from old online stores often have copy protection. Protected files cannot be converted. Files you ripped yourself usually have none.
Old recorder files sound muffled.
Many dictation recorders saved low-quality WMA. Converting cannot add detail back. Use normalize to make speech easier to hear.
Track names are missing after conversion.
Fill in the tag fields in the advanced options for each file.
WMA から MP3 への設定
- エンジン
- メディア
- 設定
- 調整できる設定: 13
- Trim Start
- Trim End
- Volume
- Fade In
- Fade Out
- Bitrate
- VBR Quality
- Sample Rate
- Channels
- Normalize Volume
- Audio Channels
- Reverse Audio
WMAからMP3への変換について
WMA (Windows Media Audio) served Windows users for years, but the format's platform limitations make it impractical today. Mac users, iPhone users, and many devices simply can't play WMA files. Converting to MP3 unlocks universal playback for your Windows Media audio collection.
Our WMA to MP3 converter transforms Microsoft's proprietary format into the universal MP3 standard. Whether you have music ripped in WMA, voice recordings from Windows software, or files from the Windows Media era, the conversion produces compatible MP3s that work everywhere.
WMAをMP3に変換する理由
Device compatibility demands MP3. iPhones don't play WMA. Many Android music apps struggle with it. Car stereos often reject WMA. Portable players may not support it. MP3 works on every audio device ever made.
Software and platform support favors MP3. Podcast platforms don't accept WMA. DJ software prefers MP3. Audio editors may not import WMA. Converting enables use across all audio applications.
Sharing becomes practical with MP3. When sending audio to others, MP3 guarantees playback. WMA might work for some recipients; MP3 works for everyone.
主な活用例
- Play Windows Media audio on Mac and iOS devices
- Import WMA files into music libraries on any platform
- Share audio with users on non-Windows systems
- Prepare WMA recordings for podcast distribution
- Create compatible versions of voice recordings
- Migrate from Windows Media Player to other software
仕組み
Our converter handles both standard WMA and WMA Pro (high-definition variant). Audio decodes fully before MP3 encoding. The default is variable bitrate at quality 2, about 190 kbps on average, which provides excellent quality for most content; you can also pick a fixed bitrate.
Metadata transfers from WMA tags to MP3 ID3 tags. Album art, artist, title, and album information preserve through conversion. Multi-channel WMA downmixes to stereo by default.
品質とパフォーマンス
Converting between lossy formats (WMA to MP3) involves some quality consideration. At 192kbps or higher, the MP3 output sounds excellent. For high-bitrate WMA source files, use 256-320kbps MP3 to preserve quality.
デバイス互換性
| Device | WMA | MP3 |
|---|---|---|
| Windows | Native | Native |
| macOS | Partial | Native |
| iOS | No | Native |
| Android | Partial | Native |
| Linux | Partial | Native |
| ChromeOS | No | Native |
WMA to MP3: real-world performance
| Speed | Near-instant. |
| Output size | Often smaller than the WMA source (measured ~46% of it). |
| Quality | V2 VBR (~190 kbps) and plays everywhere WMA doesn't (Mac, iOS, most phones). |
| Engine | Media engine (MP3 encoder), server-side. |
Measured on our servers, June 2026, on a 3-minute audio file. See all measured conversions →
最良の結果を得るためのヒント
- 1Match or exceed the original WMA bitrate when choosing MP3 output bitrate
- 2DRM-protected WMA (purchased music, streaming) cannot be converted
- 3Album art and metadata transfer from WMA tags to MP3 ID3 tags automatically
- 4WMA Pro at high bitrates should be converted at 256-320kbps MP3
- 5Batch convert entire Windows Media Player libraries to MP3 for cross-platform use
関連する変換
Escape WMA's platform prison with our free converter. Create universally playable MP3s from your Windows Media audio files, enabling playback on any device or platform.
WMAとMP3の比較
| 特徴 | WMA | MP3 |
|---|---|---|
| 正式名称 | Windows Media Audio | MPEG Audio Layer III |
| 拡張子 | .wma | .mp3 |