Audio Tools

Shift the pitch of any audio file up or down in semitone steps. Perfect for karaoke key changes, slowing down music for practice, or adjusting playback speed for language learning.

Visualize the frequency spectrum of any audio file in real time. Three display modes (bar, line, circle), peak frequency detection with note names (C4, A4, etc.), and band-level analysis for mixing and tuning.

Generate test tones from 20 Hz to 20 kHz in six waveforms: sine, square, triangle, sawtooth, white noise, and pink noise. Useful for speaker testing, instrument tuning, and hearing self-checks.

A full-featured drum machine with kick, snare, hi-hat (open/closed), and clap across 16 steps. Includes 9 preset patterns from four-on-the-floor to trap, swing control, per-track mixer, and WAV export.

Create custom ringtones for iPhone and Android with waveform editor, trimming, smooth fade effects, and bitrate control — all in your browser with no server uploads.

Convert stereo to mono, mono to stereo, or swap and split left/right channels. Handy for podcast editing, PA setup checks, and any situation where you need quick channel manipulation.

Speed up or slow down audio without changing the pitch, or shift the pitch without changing the speed. Works with MP3, WAV, and M4A files right in your browser — no software to install. Perfect for music practice, transcription, and audio production.

Convert audio file bitrates easily in your browser with MP3, WAV, and OGG format support. Choose from 6 levels (64–320 kbps) and optionally convert stereo to mono for further file size reduction. Preview estimated output size in real-time before converting. Free, secure, no server upload required.

Add immersive 3D spatial audio to any sound file. Place sound sources anywhere in 360° using HRTF, create 8D audio orbiting around the listener, and produce binaural tracks for ASMR content.

A completely free online tool that generates various sound effects including beep, alarm, laser, explosion, coin, power-up, jump, and notification sounds directly in your browser using Web Audio API oscillators and noise. Customize pitch, duration, and volume with intuitive sliders, then download as WAV files.

A free online tool to merge multiple MP3 or WAV audio files into a single track with one click. Fast, secure, and processes everything locally in your browser with no uploads.

Automatically detect and remove silent sections from audio files (MP3, WAV, M4A, etc.) entirely in your browser. Keep only the meaningful audio and export as MP3 — free, fast, and completely private with no server uploads.

A completely free online music visualizer that generates beautiful real-time visual effects simply by uploading your audio file. Featuring four visualization modes, adjustable FFT sizes (256/512/1024), frequency smoothing, six color presets, and keyboard shortcuts (Space for play/stop, arrow keys for effects). With customizable gradients, backgrounds, sensitivity, and fullscreen support, it's perfect for live performances, DJ setups, and music production inspiration.

A completely free online tool that generates frequency-domain spectrogram images from audio files directly in your browser. Simply drag and drop an audio file to visualize its time, frequency, and amplitude information using the Web Audio API AnalyserNode with FFT (Fast Fourier Transform). Supports four color maps — Inferno, Viridis, Grayscale, and Hot — with customizable FFT size (256–4096) and decibel range. Download the generated spectrogram as a PNG image with one click.

An online tool for easily adding delay and echo effects to your audio files. Equipped with 5 presets — Slapback (0.08s / low feedback), Quarter Note (0.5s / medium feedback), Ping Pong (0.3s / high feedback), Long Echo (1.0s / high feedback), and Subtle (0.2s / gentle) — you can apply optimal delay settings with a single click. In custom mode, freely adjust delay time (0.01–2s), feedback amount (0–90%), and wet/dry mix (0–100%) using intuitive sliders. The real-time preview feature powered by Web Audio API DelayNode with feedback loop lets you hear the effect before downloading. Everything runs in the browser with no software installation or account registration required. Perfect for music production, vocal effects, podcasts, video editing audio, sound design, and any scenario where you want to add depth and space to your audio. Unlike desktop DAWs, this free delay effect processor requires no download, works on any device with a browser, and maintains complete privacy by keeping all audio processing on your local machine.

A completely free online tool for generating and auditioning chord progressions for songwriting and music production. Features 13 preset patterns, random generation, loop count settings, and export functionality for all music genres. Freely select from 12 keys and major/minor modes, adjust tempo from 40 to 240 BPM, and instantly hear results via Web Audio API real-time playback.

A completely free online tool to accurately calculate and measure the BPM (Tempo) of any song simply by tapping your mouse or keyboard in time with the music. Perfect for DJs and music producers.

Adjust the frequency characteristics of your audio files with a 10-band graphic equalizer. Boost or cut each band from 31Hz to 16kHz within a range of -12dB to +12dB with real-time EQ curve visualization. Equipped with 8 presets including Flat, Bass Boost, Treble Boost, Vocal, Rock, Pop, Classical, and Jazz for one-click optimal sound settings. Real-time preview and MP3 download directly in your browser—no installation or registration required.

Free browser-based audio volume booster for quiet MP3/WAV files. Features presets, LUFS normalization, dB display, and up to 500% boost without server upload.

Apply 6 professional voice effects with customizable pitch, reverb, and delay sliders for professional-quality results directly in your browser.

Generate hundreds of unique sound effects with a single click. Choose from 9 categories—explosions, lasers, coins, power-ups—and lock the parameters you like to fine-tune. Combine sounds on a DAW-style timeline to craft complex, layered effects.

Automatically detect the musical key and scale of any audio file directly in your browser—completely free, no uploads, no account needed.

Real-time pitch detection for guitar, ukulele, bass, mandolin, violin, cello and more. A4 calibration support, cent-level precision tuning, no installation required.

A completely free, browser-based voice recorder that applies real-time audio effects like reverb, echo, deep voice, and robot voice with built-in noise reduction while recording from your microphone. Save effect presets, download as WAV with no server uploads or account signup required.

An online tool for easily reducing background noise from audio files. Using a noise reduction algorithm based on spectral gating technique, it effectively reduces unwanted background noise such as air conditioner hum, fan noise, power line hum (50Hz/60Hz), and ambient sounds mixed into recordings. Equipped with 4 presets — Light, Medium, Heavy, and Voice Optimized — you can apply optimal noise reduction settings with a single click. In custom mode, freely adjust noise reduction strength (0–100%), smoothing (0–100%), and volume boost (-12~+12dB) using sliders. Multi-stage filter processing combining high-pass and low-pass cuts with 50Hz/60Hz notch filters selectively removes noise components while preserving voice clarity. The volume boost feature automatically adjusts post-processing audio level for better clarity. Supports both MP3 and WAV (lossless) output formats so you can choose the format that best suits your needs. The real-time preview feature powered by Web Audio API lets you hear the effect before downloading. Everything runs in the browser with no software installation or account registration required. Perfect for podcasts, interview recordings, meeting audio, narration, video editing audio materials, and any scenario where you need crystal-clear sound quality.

Add more bass to any MP3 or audio file right in your browser. Pick from 5 presets — Light, Medium, Heavy, Extreme, and Sub Bass — or dial in your own gain and frequency. Preview the result in real time with a frequency graph before you download. Auto-normalization keeps things from clipping. No account, no install — just drop your file in and boost. Works great for music, podcasts, DJ sets, and video soundtracks.

Record anything playing through your PC speakers in high quality. Great for meeting backups, game audio capture, or saving audio from videos. No stereo mix setup or OBS needed—just click and record.

A free online tool to create seamless audio loops from your sound files. Load MP3, WAV, or other audio formats, select the exact region you want to loop, and apply crossfade for perfectly smooth transitions between iterations. Set the loop count, preview the result in real-time, and download the finished looped audio. Powered by Web Audio API with 100% browser-side processing—no server uploads required. Ideal for creating background music loops, repeating sound effects, and practice tracks.

A completely free online tool that detects pitch in real time from audio files or microphone input. Instantly displays detected frequency (Hz), musical note name (C4, A4, etc.), cent deviation from perfect pitch, and harmonics. Using a high-accuracy autocorrelation algorithm, it is ideal for instrument tuning verification, vocal training, and acoustic analysis.