Convert MP3 to WAV: Free Audio Converter
Convert MP3 to uncompressed WAV format. Perfect for audio editing, professional workflows & maximum compatibility.
MP3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 MP3 files
MP3 is the most common lossy audio format. It keeps files small by removing parts of the sound the ear notices least.
People convert MP3 to WAV because some editors, DJ software, phone systems and burning tools only accept WAV. WAV is uncompressed, so the audio loads without any decoding.
How we convert MP3 to WAV
- Output
- 16-bit PCM WAV.
- Sample rate
- Kept from the MP3 unless you choose 44.1 kHz, 48 kHz or 96 kHz.
- Channels
- Stereo stays stereo. Mono is available for phone systems that need it.
- Measured
- A 2.4 MB MP3 became a 10.6 MB WAV in about 4 seconds of processing.
Common problems and fixes
The WAV does not sound better than the MP3.
That is expected. Converting to WAV cannot restore the data the MP3 removed. It only changes the file to a format more tools accept.
A phone system or voice menu rejects the file.
Many systems need mono at a set sample rate. Choose mono and the sample rate your system asks for.
The WAV file is very large.
WAV is uncompressed, so expect about 10 MB per minute of stereo. Trim the parts you do not need before you convert.
MP3 から WAV への設定
- エンジン
- メディア
- 設定
- 調整できる設定: 11
- Trim Start
- Trim End
- Volume
- Fade In
- Fade Out
- Sample Rate
- Bit Depth
- Channels
- Audio Channels
- Reverse Audio
- Strip Metadata
MP3からWAVへの変換について
Converting MP3 to WAV creates uncompressed audio files for editing, professional workflows, and maximum software compatibility. While WAV files are larger, they offer advantages for audio production that compressed MP3 cannot match.
Our MP3 to WAV converter produces clean, uncompressed audio from your MP3 files. The output is ready for audio editors, DAWs, professional systems, and any workflow that benefits from uncompressed format.
MP3をWAVに変換する理由
Audio editing benefits from WAV format. DAWs (Digital Audio Workstations) handle uncompressed audio more efficiently. Effects processing, mixing, and mastering produce better results with WAV source material than repeatedly decoded MP3.
Software compatibility often requires WAV. Some professional systems, DJ software, and specialized audio tools expect WAV input. Broadcasting systems may require WAV. Converting ensures compatibility with demanding audio workflows.
Processing headroom increases with WAV. When applying effects or processing, uncompressed audio prevents quality degradation from repeated compression cycles. For multi-stage audio production, WAV preserves quality throughout.
主な活用例
- Import audio into DAWs for editing and production
- Prepare tracks for professional DJ software
- Create compatible files for broadcast systems
- Enable high-quality effects processing
- Build sample libraries from MP3 sources
- Prepare audio for CD burning or mastering
仕組み
Our converter decodes MP3 completely and writes uncompressed PCM audio to WAV format. Output is 16-bit PCM at the sample rate of the MP3 (usually 44.1kHz, CD quality); you can choose 44.1, 48 or 96 kHz instead.
The conversion doesn't enhance quality—MP3's lossy compression can't be reversed. However, the WAV output prevents further quality loss during editing and processing.
品質とパフォーマンス
Converting MP3 to WAV doesn't restore detail lost during original MP3 encoding. The WAV will sound identical to the MP3—but can now be edited without additional quality loss. For maximum quality, source from lossless originals when possible.
デバイス互換性
| Device | MP3 | WAV |
|---|---|---|
| Windows | Native | Native |
| macOS | Native | Native |
| iOS | Native | Partial |
| Android | Native | Partial |
| Linux | Native | Native |
| ChromeOS | Native | Partial |
MP3 to WAV: real-world performance
| Speed | Near-instant. |
| Output size | WAV is uncompressed — expect roughly 10× the MP3 (measured 1.4 MB → 15.5 MB). |
| Quality | Decoded to lossless PCM; note WAV cannot recover detail the MP3 already discarded. |
| Engine | Media engine, 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
- 1Converting MP3 to WAV doesn't restore detail lost during original MP3 encoding
- 2The WAV output is 16-bit PCM at the MP3's sample rate, suitable for all systems
- 3If your DAW session runs at 24-bit, import the 16-bit WAV and let the DAW convert it
- 4Keep the original MP3 for portable use — WAV files are 10x larger
- 5WAV format prevents further quality loss during multi-stage audio editing
関連する変換
Prepare your MP3 files for professional audio workflows. Our converter creates uncompressed WAV files ready for editing, mixing, and any application requiring lossless format.
MP3とWAVの比較
| 特徴 | MP3 | WAV |
|---|---|---|
| 正式名称 | MPEG Audio Layer III | Waveform Audio File Format |
| 拡張子 | .mp3 | .wav |