Audio tools

Convert and edit audio files. Everything runs locally in your browser.

📖 New to audio? Read our Best Free Online Audio Tools: A Complete Guide to Converting, Editing and Fixing Audio Files for a full comparison of every tool below and which one to pick.

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• 🎵8D Audio Converter

  Turn a song into 8D audio in your browser with a rotating left-right pan, adjustable speed and depth, plus optional reverb. Free, private, no upload.

• 🎵Convert AIFF to MP3

  Convert AIFF and AIF audio to MP3 in your browser at 320, 256 or 192 kbps. Free and private, with no upload and no size limit.

• 🎵Convert AMR to MP3

  Convert AMR voice recordings from old Nokia and Android phones to MP3 in your browser. Free and private, with no upload and no size limit.

• 🎵Audio Converter

  Convert MP3, WAV, FLAC, OGG, Opus, M4A, AAC, WMA, AIFF or AMR to MP3, WAV or M4A in your browser. No upload, no account, no size cap.

• 🎵Audio Joiner

  Join multiple audio files into one MP3 or WAV in your browser, free and private. Mix MP3, WAV, M4A and OGG tracks, with an optional crossfade.

• 🎵Audio Pitch Changer

  Shift audio pitch in semitones without changing speed, or apply nightcore and slowed plus reverb presets. Free and private, with no upload.

• 🎵Bass Booster

  Boost the bass in a song or audio file in your browser. Subtle, strong or extreme presets with a clipping-safe limiter. Free, private, no upload.

• 🎵Binaural Beats Generator

  Generate binaural beats with delta, theta, alpha, beta and gamma presets, an adjustable beat frequency and a session timer. Free and private, in your browser.

• 🎵Boost MP3 Volume

  Make an MP3 louder or quieter in your browser. Presets for +50%, +100% and -50%, or an exact decibel value. Free, private, no upload, no watermark.

• 🎵BPM Counter

  Find a song's tempo by tapping along. Tap any key or click to the beat for a live BPM with a rolling average and a tap-consistency confidence score.

• 🎵Change Audio Speed

  Speed up or slow down MP3, WAV, M4A, OGG and FLAC in your browser. Seven presets from 0.5x to 3x, pitch left alone, nothing uploaded.

• 🎵Chord Transposer

  Transpose chord sheets to a new key by semitones, fix sharp/flat spelling, and get a capo suggestion. Free, runs in your browser, nothing is uploaded.

• 🎵Compress MP3

  Re-encode an MP3 at 96, 64 or 40 kbps mono in your browser. Free, no upload, no watermark, and it never returns a file bigger than the one you dropped in.

• 🎵Cut MP3

  Cut a section out of an MP3 in your browser. The frames inside your range are copied straight across, so there is no re-encode, no upload and no watermark.

• 🎵Edit MP3 Tags

  Set an MP3's title, artist, album, year, genre and cover art from a small JSON file, in your browser. The audio frames are copied through untouched.

• 🎵Convert FLAC to MP3

  Convert FLAC to MP3 in your browser at 320, 256 or 192 kbps. Free and private, with no upload, no size limit and no watermark.

• 🎵Guitar Chord Finder

  Look up guitar chord shapes with clear fretboard diagrams, left-handed mode, and a strum-to-hear button. Free, works in your browser, nothing to install.

• 🎵Online Guitar Tuner

  Tune your guitar, bass or ukulele by microphone with real-time pitch detection and a cents-off needle. Free, works in your browser, nothing recorded.

• 🎵Convert M4A to MP3

  Convert M4A voice memos and iTunes audio to MP3 in your browser. Free and private, with no upload, no size limit and no watermark.

• 🎵Online Metronome

  A precise online metronome with a 30 to 250 BPM slider, tap tempo, four time signatures and an accented downbeat that will not drift over a long session.

• 🎵Convert MP3 to M4R (iPhone Ringtone)

  Cut any MP3 down to a 30 second AAC ringtone an iPhone will accept, with a start time field. Runs on your own device, no sign-up and no watermark.

• 🎵Convert MP3 to WAV

  Convert MP3 to uncompressed 16-bit PCM WAV in your browser, ready for editors, samplers and CD burning. Free, private, no upload, no size limit.

• 🎵Convert MP4 to MP3

  Extract the audio from an MP4 video as an MP3 file, right in your browser. Free and private, with no upload, no size limit and no watermark.

• 🎵Normalize Audio Loudness

  Normalize MP3, WAV, M4A, OGG and FLAC to a chosen loudness target in your browser. Two-pass loudnorm, free and private, with no upload.

• 🎵Convert OGG to MP3

  Convert OGG and OGA audio to MP3 in your browser. Free and private, with no upload, no size limit and no watermark. Game audio and voice notes welcome.

• 🎵Convert OPUS to MP3

  Convert OPUS voice notes from WhatsApp, Telegram or Discord to MP3 in your browser. Free and private, with no upload and no size limit.

• 🎵Remove Background Noise from Audio

  Clean hiss, hum and room noise out of a recording with an FFT denoiser at three strengths, plus an optional rumble cut. Runs in your browser.

• 🎵Reverse Audio

  Play an audio file backwards, or reverse just a section of it by start and end time, and download the result as MP3 or WAV. Nothing is uploaded.

• 🎵Remove Silence from Audio

  Cut the dead air out of a recording throughout, not just at the ends, with three silence thresholds and a minimum gap length. Runs in your browser.

• 🎵Speaker Test

  Four speaker checks in your browser, a hard left/right channel test, a stereo pan sweep, six frequency tones and a 50 Hz bass test. Nothing is recorded.

• 🎵Audio Spectrum Analyzer

  Watch your microphone's live frequency spectrum as 64 animated bars, with a selectable FFT size. Nothing is recorded, nothing is uploaded, no download.

• 🎵Convert Stereo to Mono

  Downmix MP3, WAV, M4A, OGG or FLAC to a single mono channel, averaged or taking one side only. Output is a 192 kbps MP3. Nothing is uploaded.

• 🎵Text to Speech Converter

  Turn text into speech with an AI voice model that runs on your own device. Six English voices, adjustable speed, MP3 or WAV download, no account.

• 🎵Tone Generator

  Generate a pure tone from 1 Hz to 20 kHz in four waveforms, with seven hearing-range presets and an exponential frequency sweep. Free and private.

• 🎵Transcribe Audio to Text

  Transcribe voice notes, interviews and meetings to text with a Whisper model that runs in your browser. Batch friendly, no upload, no account, no quota.

• 🎵Convert Video to MP3

  Extract MP3 audio from MP4, MOV, MKV, WEBM, AVI, 3GP and MTS video in your browser. Free and private, with no upload and no size limit.

• 🎵Virtual Piano

  A three octave piano from C3 to C6 you can play by mouse or computer keyboard, with sustain, note labels and two demo songs with falling note hints.

• 🎵AI Vocal Remover & Karaoke Maker

  Split a song into an instrumental and an acapella with a source separation model running in your browser. WAV output, batch friendly, nothing uploaded.

• 🎵Voice Changer

  Apply a chipmunk, deep, robot, echo or telephone effect to a recording in your browser. Pitch shifts keep the original speed. Nothing is uploaded.

• 🎵Voice Recorder

  Record your microphone in the browser and download an MP3 at three quality levels or an uncompressed WAV. No account, no install, nothing uploaded.

• 🎵Convert WAV to MP3

  Convert uncompressed WAV recordings to MP3 in your browser. Free and private, with no upload, no size limit and no watermark.

• 🎵White Noise Generator

  Mix white, pink and brown noise with rain and ocean ambience on independent level sliders, with a sleep timer. Synthesised live, nothing is downloaded.

• 🎵Convert WMA to MP3

  Convert Windows Media Audio (WMA) files to MP3 in your browser. Free and private, with no upload, no size limit and no watermark.

Audio tools in action