Free audio tools. In your browser.
Test your mic, trim a clip, remove background noise, detect BPM — all free, no downloads, no signups. Everything runs in your browser so your audio stays private.
Built by the team behind Echo. Your audio never leaves your device.
All 18 Tools
Click any tool to open it
Capture audio directly in your browser
Test and analyze audio signals
LiveOnline Pitch Detector
See your voice or instrument pitch in real time, or analyze an MP3/WAV recording. Track musical notes, Hz, octave, cents, and pitch over time in your browser.
LiveOnline Microphone Test
Test your microphone in seconds. Choose the input, watch the live level, record a six-second sample, and play it back—no download needed.
LiveOnline BPM Detector
Find the tempo of any song instantly. Upload an audio file for automatic BPM detection or tap along to the beat manually.
Enhance, clean, and transform audio
LiveOnline Voice Changer
Record your mic or upload an audio file, pick a voice preset, and download instantly. 100% free, 100% in your browser.
Online Audio Enhancer
Improve the quality of any voice recording with noise reduction, volume normalization, and professional EQ presets — all in your browser.
LiveOnline Noise Remover
Remove background noise from any audio file. Upload, process, and download — all in your browser with zero uploads to any server.
Online Audio Equalizer
Apply professional 10-band EQ to MP3, WAV, and other audio files. Boost bass, cut mids, enhance treble, preview changes, and download MP3 or WAV.
LiveAI Vocal Remover
Remove vocals from any song using AI — directly in your browser. Create instrumentals, karaoke tracks, and acapellas. No upload, no signup, 100% private.
LiveAI Stem Splitter
Split any song into 4 separate stems — vocals, drums, bass, and instruments. AI-powered, runs in your browser, 100% private.
Online Pitch Changer
Change the pitch of songs, music, or voice by up to 12 semitones without changing speed. Upload, preview, and download the result as MP3 or WAV.
Online Bass Booster
Add deep, powerful bass to any audio file. Adjust boost amount and frequency targeting, preview in real-time, and download — all in your browser.
Online Reverb Generator
Add professional reverb and echo to voice recordings and music. 5 acoustic presets with adjustable decay time and wet/dry mix — all in your browser.
Convert, trim, and export audio files
LiveOnline Audio Converter
Convert audio files between formats instantly in your browser. WAV ↔ MP3 ↔ OGG ↔ FLAC.
LiveOnline Text to Speech
Type something, pick a narrator, get audio — no signup, unlimited generations, and nothing leaves your device.
LiveOnline Audio Trimmer
Trim audio files directly in your browser. Set start and end points visually, preview your cut, and download the trimmed result.
LiveRVC Model Converter
Convert .pth voice models to .onnx format right in your browser. No upload, no Python, 100% private.
Online Audio Speed Changer
Speed up or slow down any audio file from 0.25x to 4x. Quick-select presets, precision slider, and pitch preservation — all in your browser.
Your audio stays on your device
Every tool on this page processes audio using the Web Audio API — a browser-native technology that runs entirely on your device. No audio files are ever uploaded, transmitted, or stored on any server.
This is not just a marketing claim. Open your browser developer tools (Network tab) while using any tool and verify for yourself — zero audio data leaves your browser. This is our privacy commitment.
Frequently asked questions
Are these audio tools really free?
Do you upload my audio files?
What browsers are supported?
Can I use these on mobile?
What is the audio quality?
How are these different from your desktop app?
Need real-time voice changing?
These browser tools are great for quick tasks. For real-time AI voice conversion during calls and gaming, download the desktop app.