Convert supported audio and media files to MP3, choose the bitrate, estimate output size, and process one file or a batch in your browser.
Drop an audio or MP4 file here to convert, or import from:
An MP3 converter creates a broadly compatible .mp3 listening or delivery file from supported audio sources. It is useful when a device, car stereo, website, client, or archive workflow expects MP3.
This page keeps MP3 as the destination while accepting different source formats. You can convert one file or a batch, select bitrate, retain a compatible source rate, and estimate storage before encoding.
Upload M4A, WAV, FLAC, OGG, AAC, AIFF, WMA, Opus, AMR, MP3, or supported MP4 input without reselecting the destination.
Choose 64-320 kbps or keep a compatible detected source bitrate to balance speech, music quality, compatibility, and file size.
Process files sequentially to limit browser memory use, then download each result or collect the completed MP3 files in a ZIP.
Use detected duration and bitrate to forecast one result or a complete batch before starting the conversion.
Use Single File for preview and confirmation, or Batch Convert when several files need the same MP3 destination.
Upload one supported file or switch to Batch Convert for up to 10 files. The converter detects source formats, duration, bitrate, sample rate, and channels where available.
Keep a compatible source bitrate or select 128 kbps for speech, 192 kbps for general listening, or 256-320 kbps for higher-quality music copies.
Review the estimated size, start browser processing, and save the MP3 result. Batch results can be downloaded separately or as one ZIP archive.
MP3 remains useful when broad playback support and predictable file size matter more than keeping a lossless production master.
Create MP3 copies for car stereos, USB players, portable hardware, and apps that reject newer or less common audio formats.
Use a practical bitrate for spoken audio that must be emailed, uploaded, reviewed, transcribed, or stored in a familiar format.
Keep WAV, AIFF, or FLAC as the source archive and make smaller MP3 copies for phones, websites, and everyday listening.
Turn several supported source formats into one MP3 delivery set without handling each format in a separate application.
Bitrate controls storage and compression, but it cannot improve detail that is absent from the source.
Use for speech where minimum size is the priority. Music artifacts are more noticeable at these rates.
A practical range for podcasts, interviews, demos, and everyday music listening.
Use for higher-quality music delivery and review copies when the additional file size is acceptable.
Retain a detected source bitrate when it is compatible, avoiding automatic inflation of a low-bitrate source into a needlessly large MP3.
Choose MP3 for distribution and compatibility; retain the original source when it has production, archive, or ecosystem value.
| Source | What changes in MP3 | Best practice |
|---|---|---|
| WAV / AIFF | Large PCM audio becomes a smaller lossy file | Keep the PCM master and use MP3 as a delivery copy |
| FLAC / ALAC | Lossless audio becomes smaller and lossy | Retain the lossless archive |
| M4A / AAC / OGG / Opus | One lossy codec is transcoded to another | Use MP3 only when compatibility requires it |
| WMA / AMR | Legacy or speech-focused audio becomes easier to open | Do not expect restored fidelity |
A higher MP3 bitrate can reduce new encoding damage, but it cannot restore information removed by an earlier lossy codec.
The converter accepts MP3, WAV, M4A, FLAC, OGG, AAC, AIFF, WMA, Opus, AMR, and supported MP4 input. Protected subscription or DRM files cannot be converted.
Use 128 kbps for speech, 192 kbps for general listening, and 256-320 kbps for higher-quality music copies. Keeping a compatible source rate can avoid unnecessary file-size inflation.
Yes. Add up to 10 files or 500 MB total. They are processed sequentially and can be downloaded individually or together as a ZIP.
No. MP3 is a lossy delivery format. It can improve compatibility and reduce size, but it cannot restore detail missing from the source.
The estimate uses detected duration and the selected or retained bitrate. The final container may differ slightly because of metadata and encoder overhead.
Files selected from your device are decoded and encoded locally in the browser. Provider and link imports first use the selected provider and configured import service.
Convert MP3, WAV, M4A, FLAC, OGG, AAC, AIFF, WMA, Opus, and AMR, with optional MP4 audio input and ALAC output.
Convert MP4, MOV, AVI, MKV, WEBM, FLV, or WMV entirely in your browser.
Detect monophonic pitch, clean up timing, transpose notes, preview the result, and export a standard MIDI file.
