免费在线音频转换器

好用的在线音频转换器——免费转换 MP3、WAV、FLAC、M4A、OGG、AAC 等 40 多种音频格式。可调整比特率、采样率和音质。无需注册,无需安装,适用于所有设备。

Or drop files here. Max file size 1GB.

选择音频格式

Select from our wide range of audio formats for conversion

Why Choose Our Audio Converter?

Fast Conversion

Convert your audio files quickly with high-quality output

安全隐私

Your files are processed securely and deleted after conversion

Advanced Settings

Customize bitrate, sample rate, and audio quality settings

How to Convert Audio Files Online

1

Upload your file

Drag and drop your file into the converter above, or click to browse your device. Files up to 1 GB are supported.

2

Choose output format

Select your desired audio format — MP3, WAV, FLAC, M4A, OGG, and many more are available.

3

Download your converted file

Your file is converted instantly. Download the result and your files are automatically deleted for your privacy.

什么是音频转换器?

音频转换器是一种将音频文件从一种格式转换为另一种格式的工具。无论你需要将 MP3 转为 WAV 以便专业编辑,将 FLAC 转为 MP3 方便随身播放,还是将 M4A 转为 MP3 获得更广泛的兼容性,音频转换器都能完成重新编码,并让你控制输出质量。

Convertr 的在线音频转换器支持 40 多种格式,并完全在浏览器中运行——无需安装软件,也无需创建账号。上传文件,选择目标格式,按需调整比特率、采样率等设置,几秒钟后即可下载结果。

转换音频文件的常见原因包括:减小文件体积以便分享或存储,确保在特定设备或媒体播放器上兼容播放,从视频文件中提取音频,为专业编辑准备音乐,或以无损质量归档录音。

还需要转换其他文件类型? 试试我们的视频转换器 可转换 MP4、MOV、AVI 等 50 多种视频格式,或使用我们的 图片转换器 转换 JPG、PNG、WebP 等更多图片格式。

支持的音频格式

在所有常见音频格式之间转换,包括无损和有损格式

有损格式

文件更小,适合流媒体播放和便携设备。

MP3 AAC OGG WMA OPUS M4A AMR AC3

无损格式

完整保留音频质量,非常适合归档和专业用途。

WAV FLAC AIFF ALAC APE DSD PCM

How to Convert Popular Audio Formats

Step-by-step guides for the most common audio conversions

Convert MP3 to WAV

Need uncompressed audio for editing in Audacity, GarageBand, or a DAW? Convert your MP3 files to WAV to get lossless quality that every audio editor supports. WAV is the standard format for professional audio production.

Convert MP3 to WAV now

Convert FLAC to MP3

FLAC files sound great but are too large for phones and portable players. Convert FLAC to MP3 at 320 kbps for near-lossless quality at a fraction of the file size — perfect for Spotify-like quality on any device.

Convert FLAC to MP3 now

Convert M4A to MP3

M4A files from iPhones, iTunes, and Apple Music don't play everywhere. Convert M4A to MP3 for universal compatibility across Android, Windows, car stereos, and any media player.

Convert M4A to MP3 now

Convert WAV to MP3

WAV files are huge — a 3-minute song can be 30 MB. Convert WAV to MP3 to shrink files by 90% while keeping great audio quality. Ideal for sharing music, uploading to websites, or freeing up storage.

Convert WAV to MP3 now

Convert OGG to MP3

OGG Vorbis files from Spotify downloads or Linux systems need converting for wider compatibility. Convert OGG to MP3 to play your audio on any device or media player without issues.

Convert OGG to MP3 now

Convert WAV to FLAC

Archiving a music collection? Convert WAV to FLAC to cut file sizes in half with zero quality loss. FLAC supports metadata tags and is the preferred format for audiophile music libraries.

Convert WAV to FLAC now

Audio Format Comparison

Compare popular audio formats to choose the right one for your needs

Format Type Typical Bitrate File Size (per min) Quality Best For
MP3 Lossy 128–320 kbps ~1–2.5 MB Good Music playback, sharing, portable devices
AAC Lossy 128–256 kbps ~1–2 MB Very Good Apple devices, streaming, podcasts
OGG Lossy 96–320 kbps ~0.8–2.5 MB Very Good Spotify, gaming, open-source projects
OPUS Lossy 64–256 kbps ~0.5–2 MB Excellent VoIP, voice chat, low-bandwidth streaming
WAV Lossless 1,411 kbps ~10 MB Perfect Audio editing, professional production, mastering
FLAC Lossless ~800–1,200 kbps ~5–8 MB Perfect Archiving, hi-fi music, audiophile playback
M4A Lossy / Lossless 128–256 kbps ~1–2 MB Very Good iTunes, Apple Music, iPhone recordings
WMA Lossy / Lossless 128–320 kbps ~1–2.5 MB Good Windows Media Player, legacy Windows apps
AIFF Lossless 1,411 kbps ~10 MB Perfect Mac audio editing, GarageBand, Logic Pro

Audio Format Comparisons

Side-by-side breakdowns of the most popular audio formats to help you pick the right one

MP3 vs FLAC

MP3 FLAC
TypeLossyLossless
File Size (3 min)~3–5 MB~15–30 MB
QualityGood–Very GoodPerfect (identical to original)
CompatibilityUniversalMost modern players
Best ForEveryday listening, sharingArchiving, audiophile use

Choose MP3 when file size matters — music sharing, phone storage, or streaming. Choose FLAC when quality is non-negotiable — archiving a vinyl collection, studio master files, or hi-fi playback systems.

AAC vs MP3

AAC MP3
TypeLossyLossy
EfficiencyBetter at low bitratesSlightly less efficient
Quality at 128 kbpsVery GoodGood
CompatibilityApple, YouTube, modern devicesUniversal
Best ForApple ecosystem, streamingMaximum device support

AAC delivers better sound quality than MP3 at the same bitrate, especially at 128 kbps and below. Choose AAC for Apple devices or modern streaming. Choose MP3 when you need guaranteed playback on every device, including older car stereos and hardware players.

WAV vs FLAC

WAV FLAC
TypeUncompressedLossless compressed
File Size (3 min)~30 MB~15–20 MB
QualityPerfectPerfect (bit-identical)
Metadata tagsLimitedFull support
Best ForDAW editing, masteringMusic archiving, hi-fi

Both WAV and FLAC preserve perfect audio quality. WAV is uncompressed and preferred by DAWs like Pro Tools and Audacity. FLAC compresses to roughly half the size with no quality loss and supports album art and metadata tags — making it the better choice for music libraries and long-term archiving.

OGG vs MP3

OGG MP3
TypeLossy (Vorbis)Lossy
EfficiencyBetter at mid bitratesGood
LicenseFree & open sourcePatented (expired 2017)
CompatibilitySpotify, Android, Linux, gamesUniversal
Best ForGaming, open-source projectsGeneral use, widest support

OGG Vorbis often sounds slightly better than MP3 at the same bitrate, especially around 128–192 kbps. It is the default format in Spotify and many games. However, MP3 is universally supported. Convert OGG to MP3 for device compatibility, or MP3 to OGG for gaming and open-source projects.

M4A vs MP3

M4A MP3
CodecAAC / ALACMPEG-1 Layer 3
Quality at same sizeBetterGood
Native supportApple, iTunes, iPhoneEverything
MetadataRich (album art, chapters)ID3 tags
Best ForiPhone, Apple Music, iTunesCross-platform sharing

M4A files from iPhones, Voice Memos, and iTunes use AAC encoding which sounds better than MP3 at the same bitrate. However, many Windows apps, car stereos, and older Android devices do not play M4A natively. Convert M4A to MP3 for universal compatibility, or keep M4A if you stay within the Apple ecosystem.

OPUS vs MP3

OPUS MP3
TypeLossyLossy
EfficiencyExcellent — best in classGood
Low-bitrate qualityExcellent at 64 kbpsPoor at 64 kbps
CompatibilityWhatsApp, Discord, WebRTCUniversal
Best ForVoice, VoIP, low-bandwidthMusic, general use

OPUS is the most efficient lossy audio codec available — it matches MP3 320 kbps quality at just 128 kbps. It is the default voice format in WhatsApp, Discord, and Telegram. Convert OPUS to MP3 when you need to play voice messages or recordings on devices that do not support OPUS natively.

When to Use Each Audio Format

Choose the right format for your needs with our quick guide

Music & Podcasts

For everyday listening on phones, computers and streaming.

Best formats: MP3, AAC, OGG

Professional Recording

For studio work, editing, mixing and mastering audio.

Best formats: WAV, AIFF, FLAC

Archiving & Backup

For preserving original quality in your music library or archive.

Best formats: FLAC, ALAC, WAV

Mobile & iPhone

For Apple devices, iPhones, iPads and iTunes compatibility.

Best formats: M4A, AAC, ALAC

Web & Streaming

For websites, web apps, VoIP and real-time communication.

Best formats: OPUS, OGG, AAC

Gaming & Apps

For game sound effects, notifications and app audio assets.

Best formats: OGG, WAV, OPUS

为什么使用 Convertr 转换音频?

了解 Convertr 与其他在线音频转换器的对比

功能 Convertr 常见竞品
价格 免费 免费版通常有限制
最大文件大小 1 GB 100–500 MB
音频格式 40+ 10–25
批量转换 通常仅付费可用
比特率和音质控制 功能有限或需付费
需要注册 通常需要
自动删除文件 因平台而异
支持移动设备

音频转换器常见问题

Convertr 支持 40 多种音频格式,包括 MP3、WAV、FLAC、AAC、OGG、M4A、WMA、AIFF、OPUS、AC3、AMR 等。你可以在任意受支持格式之间免费转换。

是的,Convertr 100% 免费使用。没有隐藏费用,无需注册,也不限制转换次数。

使用上方转换器上传 MP3 文件,选择 WAV 或 FLAC 作为输出格式,然后点击“转换”。文件将在几秒钟内准备好下载。

在无损格式(WAV、FLAC、AIFF)之间转换会保留完整质量。转换为有损格式(MP3、AAC、OGG)时,可以通过设置比特率控制音质。较高比特率(256-320 kbps)可获得接近无损的效果。

安全。你的文件会被安全处理,并在转换完成后自动从服务器删除。我们不会存储、分享或访问你的文件。

可以。Convertr 可在任何带浏览器的设备上使用,包括 iPhone、Android、iPad 和台式电脑。无需安装应用。

MP3 是有损格式,会移除人耳不太容易察觉的音频数据来压缩文件,因此文件更小(通常每首歌 3-10 MB)。FLAC 是无损格式,在不损失音质的情况下压缩音频,文件更大(通常每首歌 15-40 MB),并与原始录音保持一致。需要便携播放选 MP3,需要归档音质选 FLAC。

将 M4A 文件(常见于 iPhone 和 iTunes)上传到上方转换器,选择 MP3 作为输出格式,也可以设置偏好的比特率(高音质建议 256 或 320 kbps),然后点击“转换”。MP3 文件会在几秒钟内准备好下载。

日常收听可使用 192 kbps,在音质和文件大小之间取得较好平衡。高质量音乐建议使用 256 或 320 kbps,大多数人很难听出与原始音频的差别。语音或播客使用 128 kbps 通常足够。更低比特率(64-96 kbps)能节省空间,但音质会明显下降。

可以。Convertr 支持批量音频转换。一次上传多个文件,为每个文件选择相同或不同的输出格式,然后一次性完成转换。每个文件最大支持 1 GB。

追求最佳音质时,建议使用 FLAC 或 WAV 等无损格式,它们可以完整保留原始音频。FLAC 更适合多数场景,因为它能在不损失音质的情况下将文件压缩到约 WAV 的一半大小。如果文件大小更重要,256 kbps AAC 或 320 kbps MP3 也能提供大多数听众难以分辨的优秀音质。

将 OGG 文件上传到上方转换器,选择 MP3 作为输出格式,选择偏好的比特率(建议 256 kbps),然后点击“转换”。OGG 文件常见于 Spotify 下载内容和 Linux 系统,转换为 MP3 可确保在各种设备上播放。

上传 WAV 文件,选择 MP3 作为目标格式,并选择比特率。高质量音乐可使用 320 kbps,播客和语音录音可使用 128 kbps。WAV 文件通常比 MP3 大约 10 倍,因此转换后可以节省大量存储空间。

AAC(高级音频编码)通常在相同比特率下比 MP3 音质更好,尤其是在 192 kbps 以下。AAC 是 Apple 设备、iTunes 和 YouTube 的默认格式。MP3 则对旧设备和车载音响有更广泛的兼容性。对大多数用途来说,192 kbps AAC 的感知音质大致相当于 256 kbps MP3。

可以。上传 MP4、MOV、AVI 或其他视频格式,并选择 MP3 或 WAV 等音频输出格式,即可从视频文件中提取音频。Convertr 会提取音轨并转换为你选择的格式,非常适合从视频中保存音乐或制作播客片段。

iPhone 语音备忘录会保存为 M4A 文件。你可以将录音分享到电脑,或直接在 iPhone 的 Safari 中上传,然后用我们的转换器将 M4A 转为 MP3。转换后的 MP3 可在任何设备上播放,也方便通过邮件或聊天应用分享。

Discord 的语音聊天内部使用 OPUS,因为它在很低的比特率下也能提供出色音质。如果要向 Discord 或其他聊天平台上传音频文件,128-192 kbps 的 MP3 通常最合适:文件小、兼容性强,并且语音和音乐质量都不错。

M4B 是 iTunes 和 Audible 常用的标准有声书格式。将 M4B 文件上传到 Convertr,选择 MP3 作为输出格式。朗读内容建议使用 64-128 kbps,比特率足够清晰且文件更小。转换后的 MP3 可在任何媒体播放器或车载音响上播放。

OPUS 是为实时通信设计的开源音频编解码器。它能以约一半的比特率提供比 MP3 更好的质量,例如 128 kbps OPUS 可接近 256 kbps MP3。WhatsApp 语音消息、Discord、Telegram 和 WebRTC 默认使用 OPUS。VoIP、语音录音和低带宽流媒体适合使用 OPUS;需要更广泛设备兼容性时,可将 OPUS 转为 MP3。

WhatsApp 语音消息会保存为 OPUS 文件(扩展名为 .opus 或 .ogg)。先将语音消息从 WhatsApp 导出到设备,再上传到 Convertr 并选择 MP3 作为输出格式。几秒钟后,语音消息就会转换为通用可播放的 MP3 文件。