Audio Tools

Free audio tools that run in your browser — convert MP3 to WAV, slow down a song or recording, record your voice, transcribe speech to text, tune a guitar, or inspect sound with a spectrum analyzer. Plus calming sound generators for focus and sleep. No upload, no account.

23 tools available

Decibel Meter

Live dB level from your mic, with average and peak

MP3 to WAV

Convert MP3 audio to uncompressed WAV

Slow Down Audio

Slow down audio or video, keeping or dropping pitch

Voice Recorder

Record your voice in-browser, then download it

White Noise Generator

Play white, pink & brown noise to mask distractions

Computer Keyboard Piano

Play piano on your computer keyboard, in the browser

Guitar Tuner

Tune a guitar by ear with your microphone — many tunings

Audio Oscilloscope

See live audio waveforms from your mic or a file

Audio Spectrum Analyzer

See live frequency peaks and notes, mic or file

Audio to Mono

Convert stereo audio to a true mono WAV track

Audio Transcriber

Transcribe audio or video to text — free, no upload

Baby Shusher

Shush, white noise & vacuum sounds to soothe babies

Binaural Beats Generator

Custom binaural beats for focus, sleep & meditation

BPM to MS Converter

BPM to ms & Hz chart for delay, reverb & LFO timing

Pitch to BPM Calculator

New BPM after a pitch shift, in semitones, cents or speed %

Coffee Shop Noise

Endless coffee shop background noise, nothing streamed

Audio A/B Tester

A/B test two audio files in sync with one big switch

Filler Word Remover

Remove um, uh and you know from text, punctuation fixed

LUFS Meter

Measure LUFS and true peak of an audio file

Mono Audio Checker

Flip a mix to mono and watch the phase meter

Rain Sound Generator

Endless rain sound with a pure black screen for the night

Remove DC Offset

Remove DC offset from a sample, recording or wavetable

Reverse Reverb Generator

Reverse reverb swell that builds into your sound

Every tool runs in your browser — no upload, no account, free.