Convert between digital audio dBFS, analog line level dBu, consumer dBV, and peak-to-peak voltage with interactive studio reference calibration.

Crossfade between two audio tracks online with equal-power, linear, or exponential fading curves. Create seamless DJ transitions, mashups, and lossless WAV export client-side.

Merge audio soundtracks, voiceovers, or background music onto videos online. Volume mixing, audio delay sync, and browser-based WebM export with zero upload delay.

Change audio speed (tempo) and pitch independently or linked in your browser. Pitch shift semitones, time-stretch tempo without altering pitch, and export lossless WAV client-side.

Free online BPM detector and tap tempo counter. Measure beats per minute, interval timing in milliseconds, and musical tempo markings with keyboard or mouse tapping.

Generate customizable audio waveform graphics from MP3, WAV, and audio files. Customize bars, radial curves, colors, and download vector SVG and high-res PNG.

Normalize audio volume online. Apply peak and RMS loudness matching to audio files without clipping, and download studio-quality normalized WAV files.

Change audio playback speed online from 0.25x to 4x. Speed up podcasts, slow down music for transcription, and download modified WAV files.

Generate visual audio spectrograms using client-side Fast Fourier Transform (FFT). Analyze frequencies, harmonic overtones, pitch, and export high-res heatmaps.

Remove dead air, awkward pauses, and silent gaps from podcasts, lectures, and voiceovers client-side. Download trimmed WAV audio instantly.