MP3 converter, in your browser.
Convert MP3 files to WAV, M4A, OGG and FLAC and more, or turn other files into MP3. Older and specialist formats such as QCP, GSM and EAC3 convert to MP3 here too. Everything on this page is converted in your browser, so your files never leave your device.
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Older and specialist audio formats to MP3
Each of these converts to MP3 in the converter at the top of this page: drop the file and MP3 is already selected. The type is detected from the file itself where possible, so a wrong or missing extension does not stop it.
QCP, GSM, EAC3, DTS, MP2, AU, CAF, WV, TTA, APE, MPC and RA are read by the compatibility engine, ffmpeg built for the browser. It is a one-off download of about 10 MB that the browser keeps, it is slower than the built-in codecs, and it takes files up to 1 GB. MKA, WEBA and M4R are tried with your browser's own codecs first, and handed to the compatibility engine if they cannot read the file.
- QCP
- Qualcomm's PureVoice wrapper for the QCELP and EVRC speech codecs, which CDMA phones used for voice memos and ringtones. It holds narrow-band speech, comparable to a phone call, and almost nothing outside old phone software and a few media players opens it.
- GSM
- A raw stream of GSM full-rate speech, the codec of the first GSM mobile phones, at about 13 kilobits per second. It survives in voicemail and phone-system prompts, sounds like a phone call, and most players do not recognise it.
- EAC3
- E-AC-3, marketed as Dolby Digital Plus, is the successor to AC3 and carries streaming and Blu-ray soundtracks with up to 7.1 channels. It is a different bitstream from AC3, and most music players and browsers cannot play it.
- DTS
- A bare DTS surround stream, the rival of Dolby Digital on DVD and Blu-ray, typically with 5.1 channels. Home-theatre equipment plays it; phones, browsers and music apps do not.
- MP2
- MPEG-1 Layer II, the older sibling of MP3, adopted by digital radio, DVB television and Video CDs. It is less efficient than MP3 and has patchy support on phones.
- AU
- One of the oldest audio containers, from Sun and NeXT: a short header followed by the samples, often 8-bit μ-law telephone audio. It turns up in early web and Java sound clips and is rarely accepted by modern apps.
- CAF
- Apple's Core Audio Format, a flexible container with no practical size limit that can hold almost any codec, including PCM, AAC and Apple Lossless. It is common in Apple's developer tools and little supported elsewhere.
- WV
- WavPack, a free lossless compressor that shrinks a recording to roughly half its WAV size and can rebuild the exact original; its hybrid mode writes a small lossy file plus a correction file. Few phones or car stereos play it, and a conversion to MP3 is a one-way step to a lossy file, so keep the WavPack original.
- TTA
- True Audio, a free lossless codec with the same purpose as FLAC: smaller than WAV, the original rebuilt exactly. Very few players and devices support it, and an MP3 made from it is lossy, so keep the original.
- APE
- Monkey's Audio, a lossless compressor that favours small files over speed, popular for CD rips shipped with a .cue sheet. Support on phones and hardware players is poor, and an MP3 made from it is lossy, so keep the original.
- MPC
- Musepack, first called MPEGplus, a lossy codec aimed at transparent quality at high bitrates rather than the smallest file. It was popular with audiophiles around 2000 and now plays in very few apps and devices.
- RA
- RealAudio, one of the first formats for streaming sound over a dial-up connection, found in old radio shows, interviews and web archives. It plays in almost nothing today apart from VLC and other FFmpeg-based players.
- MKA
- The audio-only form of the Matroska container behind MKV. It can hold nearly any codec together with chapters, tags and cover art, and is used for audiobooks and concerts; Apple's players and most browsers do not play it.
- WEBA
- A WebM container holding only audio, Opus or Vorbis inside. It is what browsers record when a web page uses the microphone, so voice notes from websites often arrive this way; older Safari and many hardware players reject it.
- M4R
- An M4A with a different extension, which is how an iPhone recognises a ringtone: AAC audio, limited to about 40 seconds. Ordinary players may not list it as music.
F4V, MXF, DV, ASF, DIVX, WTV: what each one is, and what to expect, is on the MP4 converter page.
About MP3
MP3 is the audio format everything plays. It shrinks audio to roughly a tenth of its uncompressed size by discarding sound most listeners cannot hear. Newer codecs are more efficient, but nothing matches its compatibility.
MP3 is lossy, so editing or re-saving it repeatedly degrades the sound. MP3 plays on every phone, computer, car stereo and speaker.
- Stands for
- MPEG-1 Audio Layer III
- Type
- Audio
- Compression
- Lossy
- Usually contains
- MP3
- Introduced
- 1993, by the Fraunhofer Society and the Moving Picture Experts Group
- Opens in
- Every phone, computer, car stereo and speaker
- Best for
- Music and podcasts that must play anywhere
- File extension
- .mp3
- MIME type
- audio/mpeg
Questions
How do I open an MP3 file?
MP3 opens in: every phone, computer, car stereo and speaker. If your device or app cannot open it, convert it to WAV or M4A above.
What can I convert MP3 to?
toany converts MP3 to WAV, M4A, OGG, FLAC, M4R, AAC, OPUS, AIFF, WMA, AC3, MP2, AU, CAF, WV and TTA.
What can I convert to MP3?
toany creates MP3 files from M4A, MP4, MOV, WAV, FLAC, OGG, AAC, OPUS, WMA, AMR, WebM, MKV, AVI, WMV, FLV, 3GP, MPG, TS, M4V, M2TS, VOB, RM, OGV, AIFF, AC3 and M4B.
Can I convert QCP, GSM and EAC3 and other older formats to MP3?
Yes. toany converts QCP, GSM, EAC3, DTS, MP2, AU, CAF, WV, TTA, APE, MPC, RA, MKA, WEBA, M4R, F4V, MXF, DV, ASF, DIVX and WTV to MP3: drop the file in the converter above and MP3 is already selected. The section on older and specialist formats on this page says what each one is.
Are my files uploaded?
No. Every MP3 conversion listed here runs inside your browser. The files stay on your device.
Other audio formats
- WAVWAV converterUncompressed audio: large files, perfect quality.
- M4AM4A converterAAC audio in an MP4 container; the default for Apple voice memos and music.
- AACAAC converterRaw AAC audio: efficient and widely supported.
- FLACFLAC converterLossless compressed audio.
- OGGOGG converterAn open audio container, usually Vorbis or Opus.
- OPUSOPUS converterA modern codec that sounds good at very low bitrates.
- WMAWMA converterMicrosoft's older audio format.
- AIFFAIFF converterApple's uncompressed audio format.
- AMRAMR converterVoice recordings from older phones (AMR-NB, AMR-WB and 3GA).
- M4RM4R converterAn iPhone ringtone: AAC audio, up to 40 seconds.
- AC3AC3 converterThe Dolby Digital audio track of DVDs and broadcast TV.
- EAC3EAC3 converterDolby Digital Plus, used by streaming services.
- DTSDTS converterThe DTS surround track of DVDs and Blu-ray discs.
- MP2MP2 converterThe broadcast and DVD predecessor of MP3.
- AUAU converterA simple audio format from Sun and Unix systems.
- CAFCAF converterApple's audio container for large or unusual recordings.
- WVWV converterLossless compressed audio, usually half the size of WAV.
- TTATTA converterA lossless compressed audio format.
- APEAPE converterA lossless compressed audio format with very high compression.
- MPCMPC converterA lossy audio format from the early 2000s, popular with audiophiles.
- MKAMKA converterAudio in a Matroska container.
- WEBAWEBA converterAudio-only WebM, usually Opus or Vorbis.
- M4BM4B converterAn audiobook: AAC audio in an MP4 container, with chapters.