Convert audio

Choose the format your next step needs

Six output formats for different jobs

Choose WAV, AIFF, FLAC, MP3, AAC in an M4A container, or Opus according to the application receiving the file. Lossless formats suit editing and archiving; lossy formats can reduce download size. The available settings depend on the format and browser. A format choice is not a quality upgrade by itself: converting a compressed recording to WAV preserves the decoded audio in a larger container, but cannot recreate information removed by the earlier compression.

Sample rate and bit depth with a purpose

The converter lets you choose a supported sample rate and, where appropriate, a bit depth or bitrate. Keep the source rate when another rate is unnecessary, or match the destination’s stated requirement. Increasing a low-resolution recording to a larger number does not recover detail. Reducing integer bit depth uses dither in the conversion path. Read the output estimate and remember that uncompressed size depends on duration, channels, sample rate and sample precision rather than the filename alone.

Batch conversion with an output check

Add a collection, set the target and convert the queued files. Save a result separately or gather completed outputs in a ZIP. Keeping tags and cover art transfers supported metadata where the destination format can represent it. Every encoded result is measured for loudness and true peak, providing a check on the delivered version. Those measurements do not mean the converter intentionally masters or normalizes the music: format conversion and creative loudness processing are different tasks. A useful conversion check includes more than opening the file successfully. Confirm the channel count, sample rate, duration and any important artwork or tags in the receiving application. A mono-to-stereo choice does not invent a stereo recording, and a smaller compressed file can still be unsuitable for a workflow requiring lossless input. Choose settings for the actual handoff. Retaining the original and a short note of the chosen target makes later re-exports easier than trying to infer settings from a filename.

Who converts audio files online

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  Artists preparing release copies

  Keep an untouched lossless master and derive the format required by each destination from that file. For example, a download collection may need FLAC and MP3 versions while a collaborator asks for WAV. Make separate batches rather than repeatedly converting one compressed result into another. Check filenames, tags and track counts in the downloaded ZIP before sending it onward. The converter prepares files; it does not establish whether a distributor accepts a particular release or metadata arrangement.

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  Sample-pack makers standardizing a folder

  A folder assembled from different sessions may contain several sample rates, bit depths and channel configurations. Converting to one documented specification makes a pack easier to use, but listen before deciding that every source should become stereo or that every sample needs resampling. Mono sources often work well as mono. Preserve a source archive and check a few representative outputs, especially short transients or seamless material, before processing the rest of a large collection.

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  Video editors sharing audio

  A video workflow may require a particular sample rate or a compact review copy. Use the destination’s settings instead of choosing the highest number available. AAC and Opus availability depends on the encoder your browser exposes, so an unsupported option can require another format or browser. Listen to the beginning and ending of the converted file and verify its duration before replacing audio in a timeline. A smaller review copy remains a review copy; retain the editing master.

How to convert and check a file

1. 1

   Add supported source files

   Drop your recordings or choose them from the file picker. The browser reads them locally and shows the source information, including duration and format details when available. Each file must stay within the size limit, and its decoded audio must fit the working-memory guard. Long uncompressed files can require considerably more memory than their compressed originals. For a large batch on a modest device, begin with a few files to confirm that the chosen format and settings work comfortably.

2. 2

   Set one deliberate destination

   Select the output container, then choose the relevant bitrate or bit depth and sample rate. Use the estimated size to check that the settings make sense for sharing or storage. Decide whether to retain tags and cover art, then inspect any channel limitation shown by the page. A container with a familiar extension may still contain a codec the next application does not support, so check the actual delivery requirement rather than relying on the extension alone.

3. 3

   Convert, audition and save

   Start conversion and let each row finish before downloading. Compare a representative result against its source, checking the opening, a busy passage and the ending. Review the displayed LUFS and true peak of the encoded file, then download individual files or the ZIP. Save the outputs before leaving the tab. If you need to adjust tone, trim an edit or change the key, do that in the appropriate tool and convert the finished version afterward to avoid unnecessary repeated encoding.

Audio format and conversion questions

Learn how

Guides and tutorials that use this tool, with real screens and real numbers.

• TutorialAudio cutterCut an audio file and export it without re-encodingFour steps on the audio cutter: load, mark the region, keep the source format with the fades at 0, export. Which files stay lossless, and which cannot.