Frequently Asked Questions — Audio File Converter

Yes. No credit card, no subscription, no hidden fees, and no limit on how many files you convert. 320kbps MP3 and lossless FLAC and WAV are all available at no cost, with no account or login required — ever.

No. Everything runs in your browser. There is nothing to download or install, and it works on Windows, macOS, Linux, Android, and iOS.

Drag an audio file onto the upload box on the home page (or click to browse and select it), choose your output format and quality, then press Convert. The converted file downloads straight back to your device in a few seconds.

The converter accepts common audio formats including MP3, M4A, AAC, FLAC, WAV, OGG, and Opus. You can convert between any of the supported formats in either direction.

Each file can be up to 30 MB, which comfortably covers full-length songs at any bitrate. To convert several files, run them one after another.

You can output MP3, AAC, M4A, WAV, and FLAC. MP3 offers 128kbps, 192kbps, and 320kbps. FLAC and WAV are lossless with no separate bitrate setting. Many free online converters cap MP3 at 128kbps — we offer 320kbps at no cost.

Bitrate is the amount of audio data encoded per second. 128kbps produces the smallest files but sounds noticeably compressed to many listeners. 192kbps balances file size and quality well for everyday listening. 320kbps is the highest standard MP3 quality — what we recommend for most users. For a 3-minute track: 128kbps ≈ 2.9 MB, 192kbps ≈ 4.3 MB, 320kbps ≈ 7.2 MB.

No. A converter cannot add detail that was never in the source. If your source file is lossy (like MP3 or AAC), converting it to FLAC or WAV gives you a lossless container that preserves exactly what was there, but it cannot restore quality the original compression already removed. To avoid a second round of loss, choose 320kbps MP3 or a lossless format. See our audio quality guide for a detailed explanation.

Lossless formats (FLAC, WAV) preserve all audio data. Lossy formats (MP3, AAC) discard some data to reduce file size. Converting between two lossless formats — such as WAV to FLAC — is exact, bit for bit. Converting a lossy file to a lossless one keeps what is there but cannot recover what was already lost. FLAC is ideal for archiving; MP3 at 320kbps is ideal for portable devices.

Yes. Where the source file contains tags — title, artist, album, genre, track number, and cover artwork — they are carried across to the converted file: ID3 tags for MP3 and AAC, Vorbis comments for FLAC. Your library keeps displaying correctly in any media player.

MP3 is the universal format and plays on everything — best for portable players and car stereos. AAC and M4A are efficient and native on Apple devices. WAV is uncompressed and ideal for editing. FLAC is lossless but compressed, ideal for archiving your collection without wasting space. Each format has a hub with dedicated converters: MP3, FLAC, WAV, and AAC.

Yes, it is safe. Your file is converted and streamed straight back to you, then deleted from the server. We do not keep a copy of your audio, and there is no account, so nothing is tied to your activity. We do not collect passwords or payment information. Full detail lives in our privacy policy.

Converting audio you have the right to use — your own recordings, public-domain and Creative Commons material, promotional tracks, and files you have permission to work with — is generally fine for personal use. Copyright law varies by country, so please respect the rights of creators and do not redistribute converted files you do not own. See our guide to the legal side for a plain-language overview.

The most common causes are: (1) the file is not a supported audio format — check it is MP3, M4A, AAC, FLAC, WAV, OGG, or Opus; (2) the file is larger than the 30 MB limit; or (3) the file is corrupted or DRM-protected. Try a different file or a smaller one to confirm.

File size depends on the format and bitrate you pick. Converting to a lossless format like WAV or FLAC usually produces a larger file; converting to a lower MP3 bitrate produces a smaller one. This is expected and does not mean anything went wrong.

Yes. MP3 and AAC files are universally compatible with car stereos, iPods, generic MP3 players, Bluetooth speakers, smart speakers, and any device with a USB port or Bluetooth input. Copy files to a USB drive to plug directly into a car stereo, or transfer them to any media player over USB.

Any device with a web browser: Windows PC, Mac, Linux, Android phone or tablet, iPhone, iPad. No app or software installation required. Converted files go directly to your device and play in any media player — offline, ad-free, forever.