Free Online Audio Tools
High-precision client-side audio tools. Trim MP3s with visual waveform graphs, extract audio from videos, apply fade transitions, record voice, and process audio with 100% in-browser privacy.
Trimming, Cutting & Extraction(3 tools)
Cut MP3 and WAV tracks with waveform visualizers, apply fade in/out effects, and extract audio tracks from video.
Video to Audio Converter
Extract high-quality MP3 and lossless WAV audio tracks from MP4, WebM, MOV, and MKV videos. Trim audio, boost volume, and export with 100% in-browser privacy.
Audio Cutter & MP3 Trimmer
Cut and trim MP3, WAV, AAC, and M4A audio files online with visual waveform display. Apply fade in/out effects, adjust volume, and export lossless audio with 100% privacy.
Audio Cutter & MP3 Ringtone Trimmer
Cut audio files and songs with interactive visual waveforms, millisecond precision start/end trimming, and instant MP3/WAV download.
Recording & Sound Effects(3 tools)
Record voice notes and test microphones, speakers, and sound effects with zero latency.
Online Voice Recorder
Record high-quality voice audio, podcasts, memos, and interviews directly from your microphone. Includes live audio visualizer, pause/resume, and studio lossless WAV export with 100% in-browser privacy.
Audio & Speaker Test
Perform left/right channel stereo speaker testing, tone frequency generator, and white/pink noise testing.
Sound Effects Generator
Generate retro game sounds, notification chimes, UI alerts, and custom sound effects using Web Audio API.
Audio Processing & Effects(12 tools)
Amplify volume, reverse audio, adjust pitch, and join multiple tracks with Web Audio API DSP.
Online Audio Converter
Convert audio files between MP3, WAV, AAC, M4A, OGG, and FLAC formats online. Customize sample rates, switch between stereo and mono channels, and export with 100% in-browser privacy.
Audio Equalizer & Bass Booster
10-band graphic audio equalizer and bass booster online. Boost low-end bass, enhance vocal clarity, adjust treble frequencies with real-time spectrum visualizer, and export studio lossless WAV with 100% in-browser privacy.
Audio Joiner & Merger
Merge, combine, and join multiple audio files (MP3, WAV, AAC, M4A, OGG) into a single continuous track. Includes smooth crossfade transitions, sequence reordering, and studio lossless WAV export with 100% in-browser privacy.
Reverse Audio Online
Play and reverse songs, sound effects, and voice recordings backwards online. Create eerie reversed audio effects, investigate hidden backmasking, and export studio lossless WAV with 100% in-browser privacy.
Change Audio Pitch
Transpose and change the musical pitch of songs, vocals, and instruments online. Shift pitch up or down by semitones (-12 to +12) or cents with live preview and studio lossless WAV export with 100% in-browser privacy.
Online Voice Recorder
Record high-quality voice audio, podcasts, memos, and interviews directly from your microphone. Includes live audio visualizer, pause/resume, and studio lossless WAV export with 100% in-browser privacy.
Add Audio to Video
Add background music, voiceovers, or sound effects to any video online. Replace original audio tracks or mix multiple audio layers with independent volume controls and Full HD MP4 export with 100% in-browser privacy.
Text to Speech (TTS)
Convert written text into natural-sounding spoken audio. Choose from multiple languages, accents, customize pitch, rate, and volume with 100% in-browser privacy.
Audio Waveform & Music Visualizer
Generate animated neon waveforms, circular audio spectrums, and dancing music visualizers with live Web Audio API.
Audio Pitch & Playback Speed Shifter
Speed up or slow down audio (0.5x - 2.0x) and shift pitch semitones (-12 to +12) in real time using native Web Audio processing.
Sound Intensity & Acoustic Level Converter (dB, W/mยฒ)
Convert acoustic sound intensity level between Decibels (dB SIL), Watts per Square Meter (W/mยฒ), and ยตW/mยฒ.
AI Speech to Text Transcriber
Transcribe live microphone speech and dictation to text in real time with multi-language support and automatic punctuation 100% in your browser.
Frequently Asked Questions
Everything you need to know about Nextgen Astra online audio tools: