Convert to MP3

You can choose MP3, WAV, FLAC, M4A, OGG and AAC files as inputs. Actual support depends on their audio codecs and containers. The local engine validates each file before export; unsupported, corrupt or unreadable media are reported for that item.

No. Selecting 256 or 320 kbps does not restore sound already lost in an earlier lossy encoding. The setting controls the new MP3 export, and a high bitrate may create a larger file without audible improvement over its original source.

The batch accepts up to 10 files on desktop or 5 on mobile. The combined input budget is 200 MB or 100 MB respectively. Long or large exports can still fail an output or memory budget.

For MP3 compatibility, the encoder may resample unsupported sample rates to 44.1 kHz or reduce audio with more than two channels to stereo. If that adjustment occurs, the completed file includes a notice with the output values.

Yes. An MP3 input is decoded and encoded again using the selected bitrate, so this is not a lossless copy. Re-encoding can remove more detail and does not guarantee a smaller result. Keep the original when you need the best available source.

Changing the bitrate keeps current downloads available. Click Convert audio to encode the original files again with the new setting. Valid results replace earlier downloads; failure or cancellation keeps them. Identical settings do not repeat completed work.

Each completed row offers a download link. Download ZIP collects all successful results, including any files converted to another output format. Unfinished or failed items are excluded, and large archives may exceed browser memory limits. For a single-file list, use Download to save the audio result directly without a ZIP.

Audio files are processed in your browser using a local FFmpeg engine; they are not uploaded to a conversion service. The engine may download code on first use. Results exist only in the current session, so save files before leaving.