Audio Tools

Convert AAC audio to MP3 at a bitrate you choose, keeping the original untouched.

Work out the average bitrate of an audio file and how much it has been compressed.

Identify the container and likely codec of an audio file from its own bytes.

Cut a section out of an audio file by start time and duration.

Get the exact length of an audio file in seconds, minutes, samples and timecode.

Fade a track up from silence over the first few seconds.

Fade a track down to silence at the end, however long the file is.

See the duration, sample rate, channels, container and measured levels of an audio file.

Convert any supported audio file to MP3, WAV, FLAC or Opus in one place.

Remove low-frequency rumble, handling noise and mains hum from a recording.

Repeat a clip a set number of times, joined end to end into one file.

Normalise audio to the -16 LUFS loudness standard used by streaming platforms.

Remove high-frequency hiss and harshness above a chosen cutoff.

Set the year tag and optionally clear every other tag, without touching the audio.

Check the sample rate and channel count of an audio file, and what that rate implies.

Turn audio into a spectrogram image showing how its frequencies change over time.

Cut a long recording into equal parts and download them one at a time.

Raise the level of a quiet recording by a set number of decibels, without clipping.

Lower the level of an audio file by a set number of decibels.

Draw the waveform of an audio file as a PNG image you can download and use.

Re-encode audio at an exact bitrate, for upload limits and delivery specifications.

Set an audio file to mono or stereo, downmixing surround if there is any.

Shift audio up or down in semitones while keeping the original length.

Resample audio to 44.1 kHz, 48 kHz or a lower rate for speech.

Play audio faster or slower while keeping the pitch exactly where it was.

Reduce an audio file by re-encoding it at a lower bitrate.

Convert lossless FLAC audio to MP3 at a bitrate you choose, for players that need it.

Decode FLAC back to uncompressed 16-bit PCM WAV for editing software that needs it.

Keep only the left channel of a stereo recording and save it as mono.

Convert AAC audio in an M4A container to MP3.

Duplicate a mono recording into both channels of a stereo file.

Make an MP3 smaller by re-encoding it at a lower bitrate.

Convert MP3 files to AAC in an M4A container for smaller files at the same quality.

Wrap decoded MP3 audio in the lossless FLAC format.

Repack MP3 audio as AAC inside an M4A container, the format Apple devices prefer.

Convert MP3 audio to Vorbis in an Ogg container, a fully open and patent-free format.

Decode MP3 audio to uncompressed 16-bit WAV at 44.1 kHz.

Convert Vorbis or Opus audio in an OGG container to MP3.

Strip ID3 tags, cover art and encoder information without re-encoding the sound.

Strip silent gaps from the start, end and middle of a recording automatically.

Play a whole audio file backwards, so the last sound you hear is the first one recorded.

Keep only the right channel of a stereo recording and save it as mono.

Mix the left and right channels of a stereo file down to a single mono track.

Exchange the left and right channels of a stereo file.

Compress WAV files losslessly to FLAC - identical audio in about half the space.

Encode WAV audio to MP3 at a bitrate you choose.