Free audio tools — cut, merge,
convert, compress.
Your files stay in your browser when they can. No sign-up, no watermarks, no nonsense.
All tools
18 free audio tools. Client-side tools process everything locally — your files never leave your device.
Audio Cutter
Trim MP3 and WAV files by selecting a start and end point on the waveform.
Runs in your browserAudio Merger
Combine multiple audio files into one with optional crossfade between tracks.
Runs in your browserFade In/Out
Apply smooth fade-in and fade-out effects to your audio files.
Runs in your browserVolume Normalizer
Adjust audio volume to a target peak or RMS level. Simple, fast, client-side.
Runs in your browserSpeed & Pitch
Change playback speed or shift pitch independently. Great for practice and remixing.
Runs in your browserReverse Audio
Reverse any audio file instantly in your browser.
Runs in your browserSilence Remover
Detect and remove silent sections from audio. Set your own threshold and minimum duration.
Runs in your browserAudio Recorder
Record audio from your microphone directly in the browser. Export as WebM or WAV.
Runs in your browserID3 Tag Editor
Read and edit MP3 metadata — title, artist, album, year, genre, and track number.
Runs in your browserBPM Detector
Detect the tempo of any audio file using onset detection. Shows BPM with confidence.
Runs in your browserWaveform Viewer
Visualize audio waveforms with zoom and pan. Click to seek. Great for planning edits.
Runs in your browserAudio Compressor
Reduce file size by re-encoding at a lower bitrate. Choose from 32 to 320 kbps.
Uses our serverFormat Converter
Convert between MP3, WAV, FLAC, OGG, AAC, M4A, and Opus.
Uses our serverVideo to Audio
Extract the audio track from MP4, MOV, WebM, and MKV video files.
Uses our serverLoudness Normalizer
EBU R128 loudness normalization with LUFS targeting. For podcasts, streaming, and broadcast.
Uses our serverServer-Side Trimmer
Trim audio formats the browser can't decode — FLAC, M4A, Opus, and more.
Uses our serverBulk MP3 Converter
Convert up to 50 files to MP3 at once. Downloads as a single ZIP.
Uses our serverEqualizer
Apply EQ bands to boost or cut frequencies. Preset profiles for voice, music, and bass.
Runs in your browserPrivacy by default
Most of our tools run entirely in your browser using the Web Audio API. No upload, no server, no trace.
Client-side tools
These tools never upload your file. All processing happens in your browser using the Web Audio API and OfflineAudioContext.
Server-side tools
These tools upload your file to our server for processing with ffmpeg. Files are deleted immediately after the result is returned.
Why Audio Toolkit?
Fast
Client-side tools start processing the moment you drop a file. No upload wait, no queue.
Private
Most tools run entirely in your browser. Your audio stays on your device — we never see it.
Free
Every tool is free to use. No account required, no file limits, no watermarks on output.
Ready to edit some audio?
Pick a tool above, drop your file, and get your result in seconds. No sign-up needed.
Get started