🎧 113 free tools
Free online audio tools
Cut, convert, clean up, analyse and generate audio — with a live waveform, a real preview and nothing uploaded. Every tool runs privately in your browser.
✂️ Cut, Trim & Merge 6
Audio CutterRemove a section from any audio file and download the rest.Audio TrimmerKeep only the part you need. Drag two handles, export instantly.Audio MergerCombine multiple audio files into one, in the order you choose.Audio SplitterSplit one long file into several clips at the points you mark.Mute Audio SectionSilence a specific part of a track without cutting it out.Repeat Audio / Loop N TimesRepeat a clip back-to-back any number of times.
🔊 Volume & Loudness 4
Audio Volume ChangerTurn a track louder or quieter by an exact decibel amount.Audio NormalizerBring quiet or clipped recordings to a consistent, safe peak level.Audio Fade In / Fade OutAdd a smooth fade in and fade out with a choice of curve.Audio PannerShift stereo balance left or right with equal-power panning.
⏩ Speed & Pitch 7
Audio Tempo & Speed AdjusterSpeed up or slow down playback while keeping the pitch natural.Audio TransposerShift pitch up or down in semitones without changing duration.Audio ReverserPlay any clip backwards and export the reversed audio.Audio Key TransposerDetect a track's key and transpose it to any target key.Audio Tempo MatcherMatch a track's tempo to a target BPM with pitch preserved.Speed & Pitch Changer OnlineChange playback speed and pitch together with the classic speed-and-pitch tool.Pitch Shifter OnlineShift the pitch of audio with the classic pitch-shifting tool.
🧹 Clean & Restore 4
Audio Noise ReducerReduce background hiss and hum using spectral subtraction.Remove Silence from AudioAutomatically cut silent gaps out of a recording.Trim Silence from Start & EndClean dead air off the ends without touching the middle.DC Offset RemoverDetect and remove DC offset to re-center a waveform.
🎤 Vocal Tools 2
🎚️ Equalizer 7
Live Audio Equalizer Online10-band parametric EQ with compressor, reverb, stereo width, presets and visualizer.Bass BoosterOne-click low-frequency boost.Treble BoosterOne-click high-frequency boost for clarity.Vocal Boost EQPresence boost tuned for spoken word and vocals.High-Pass / Low-Pass Audio FilterCut rumble or hiss with an adjustable cutoff and steepness.5-Band Audio EqualizerFive-band bass-to-treble EQ with real shelving and peaking filters.Audio Dimension BassShape the bass and stereo dimension of an audio track.
🎛️ Mixing 5
Audio MixerOverlay two tracks with independent volume, like music under narration.Audio Crossfade (Two Files)Blend one track into another with an overlapping crossfade.Audio EchoAdd an echo effect to audio with adjustable delay and feedback.Slowed and ReverbCreate a slowed-down, reverberant version of an audio track.Insert AudioInsert an audio clip into another recording and export the mix.
🔧 Format & Channels 8
Stereo to Mono ConverterFold a stereo mix down to a single mono channel.Stereo Width AdjusterMake a stereo mix narrower or wider with mid/side processing.Swap Left & Right ChannelsFlip a stereo file so left and right trade places.Audio Phase InverterInvert polarity for a whole file or a single channel.Mono to Stereo ConverterDuplicate a mono file across left and right channels.MP3 Metadata & Tag EditorEdit title, artist, album, year and cover art in the browser.Sample Rate ConverterResample audio to 44.1kHz, 48kHz, 96kHz and more.Bit Depth ConverterExport WAV at 16-bit, 24-bit or 32-bit float.
🔄 Convert 23
Audio ConverterConvert between MP3, WAV, OGG, WebM/Opus, M4A and more.MP3 to WAV ConverterConvert MP3 to uncompressed WAV.WAV to MP3 ConverterConvert WAV to compressed MP3.M4A to MP3 ConverterConvert M4A/AAC to MP3.AAC to MP3 ConverterConvert AAC to MP3.OGG to MP3 ConverterConvert OGG to MP3.MP3 to OGG ConverterConvert MP3 to OGG (Opus audio).FLAC to MP3 ConverterConvert FLAC to MP3.M4A to WAV ConverterConvert M4A/AAC to WAV.AAC to WAV ConverterConvert AAC to WAV.WAV to OGG ConverterConvert WAV to OGG (Opus audio).OGG to WAV ConverterConvert OGG to WAV.FLAC to WAV ConverterConvert FLAC to WAV.OPUS to MP3 ConverterConvert OPUS to MP3.MP3 to OPUS ConverterConvert MP3 to OPUS.Batch Audio Converter & CompressorConvert or compress many files at once into one ZIP.
MP3 to M4A Converter soonNeeds an AAC encoder — not shipped yet.
MP3 to AAC Converter soonNeeds an AAC encoder — not shipped yet.
MP3 to FLAC ConverterWrap MP3 audio in lossless FLAC for FLAC-only players and libraries.WAV to M4A Converter soonNeeds an AAC encoder — not shipped yet.
WAV to AAC Converter soonNeeds an AAC encoder — not shipped yet.
WAV to FLAC ConverterCompress WAV to bit-exact lossless FLAC, typically 40–60% smaller.Video to Audio ConverterExtract and download audio from a video file in your browser.🗜️ Compress 7
Audio CompressorShrink any audio file to a target size or bitrate.Compress MP3Reduce an MP3 file's size.Compress WAVShrink a WAV by converting to compressed MP3.Compress Audio to 10MBHit a 10MB target size automatically.Compress Audio to 25MBHit a 25MB target size automatically.WhatsApp Audio CompressorShrink voice notes and clips for messaging apps.Discord Audio CompressorShrink clips to fit chat upload limits.
📊 Analysis 8
BPM DetectorDetect the tempo of a track from its rhythmic pulse.Key FinderDetect a track's musical key with Krumhansl-Schmuckler profiles.Key & BPM DetectorRun tempo and key detection together in one click.Audio SpectrogramRender a real STFT time-frequency heatmap as a PNG.Audio Frequency AnalyzerWatch a live frequency spectrum as a file plays.Audio File Info & Quality AnalyzerDuration, sample rate, bitrate, peak, loudness, DC offset, clipping.Audio Two-Files ComparatorCompare two files' waveforms and stats side by side.Podcast Chapter Marker GeneratorSuggest chapter timestamps from natural pauses.
🎙️ Record & Visualize 2
🎼 Generate & Practice 9
Tone GeneratorGenerate a pure test tone at any frequency and waveform.Noise GeneratorGenerate white, pink or brown noise of any length.Silence Audio GeneratorCreate an exact length of digital silence.Click Track GeneratorDownload a metronome click track at any BPM.Tuning Reference GeneratorPrecise A440/A432 and note reference tones.Multi-Tone Chord GeneratorGenerate major, minor and 7th chords as pure tones.Tap Tempo FinderFind a BPM by tapping along to the beat.Online MetronomeAccurate, adjustable metronome with a time signature.Beat MakerCreate and arrange beats with an online beat-making tool.
⚡ One-Click Workflows 7
Clean Voice RecordingNoise reduction + normalization chained in one step.Improve Voice QualityRumble cut + noise reduction + normalization in one step.Podcast Audio CompressorCompress an episode with presets by episode length.Podcast Noise ReducerNoise reduction pre-set for spoken-word recordings.Podcast Silence RemoverSilence removal pre-set for podcast pacing.Ringtone MakerTrim the best part of a song with automatic fades.Audio Loop MakerMake a seamless loop with a smoothed loop point.
🧮 Calculators 18
Audio File Size CalculatorEstimate exported file size from duration and bitrate.Audio Duration CalculatorWork out playback length from file size and bitrate.Audio Bitrate CalculatorFind the bitrate needed to hit a target file size.LUFS CalculatorEstimate the loudness of an audio file.BPM to Delay Time CalculatorNote-value delay times in milliseconds from BPM.Pitch / Semitone Ratio CalculatorSemitones to frequency ratio and cents.dB to Linear Gain CalculatorConvert decibels to a gain multiplier and back.Note Frequency FinderLook up a note's frequency or the nearest note to a Hz value.Audio Latency CalculatorBuffer latency in ms from buffer size and sample rate.Audio Storage CalculatorHow many songs fit in your storage.Streaming Data Usage CalculatorMonthly mobile data used by music streaming.Podcast Episode Length CalculatorEstimate runtime from a script's word count.Script Length CalculatorWords needed to hit a target runtime.Camelot Wheel Key ConverterConvert musical keys to Camelot notation for DJ mixing.Loop Length CalculatorExact loop length in seconds and samples.WAV File Size CalculatorUncompressed WAV size from rate, depth and channels.Sample Count CalculatorConvert between duration and exact sample count.Normalization Headroom CalculatorGain available before clipping.
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Why ToolsCrow audio tools?
🔒Private by design
Files are processed with the Web Audio API on your device. There is no upload step, so there is nothing to leak.
🎧Hear before you save
Every editing tool has a live waveform, spectrum and level meters, plus an Original ↔ Result switch so you can judge the change before downloading.
📐Measured, not guessed
Loudness follows ITU-R BS.1770 / EBU R128, filters are true Butterworth designs and size-targeted compression is verified by actually encoding the file.
📱Works everywhere
Responsive layouts, touch-friendly controls and keyboard shortcuts — on phones, tablets and desktops, with no installs or sign-ups.