Music Tools

Free online metronome from 20 to 300 BPM with time signatures, accent beats, tap tempo, and visual beat indicator. No download — practice right in your browser.

Tap along to any song to measure its BPM instantly. Averages your taps, shows the nearest whole tempo, and works with keyboard, mouse, or touch.

Play a realistic virtual piano in your browser using mouse, touch, computer keys, or a MIDI keyboard. Shows note names and supports sustain — free, no download.

Make beats in your browser with a free 16-step drum machine: kick, snare, hi-hats, clap and more, tempo and swing control, preset patterns. No download or sign-up.

Free online guitar tuner using your microphone: accurate pitch detection with a cents needle, presets for guitar, bass, and ukulele, plus reference tones. No app needed.

Sing into your microphone to find your lowest and highest notes, see your range in octaves, and get your likely voice type from bass to soprano. Free and private.

Train your ear to recognize musical intervals from minor seconds to octaves: listen, answer, and track your accuracy. Adjustable difficulty and playback modes.

Convert BPM to milliseconds for every note value: whole to 1/64, dotted and triplet. Sync delay, reverb pre-delay, and LFO times to your track's tempo.

Find how long 8, 16, or any number of bars lasts at a given BPM and time signature — or how many bars fit a target duration. Essential for producers and editors.

Transpose notes, chords, or whole songs up or down by semitones, with presets for Bb, Eb, and F instruments. Instant results for singers and horn players.

Convert any musical note to its frequency in Hz and MIDI number, with adjustable A4 reference pitch. Based on equal temperament tuning.

Interactive circle of fifths: click any key to see its signature, relative minor, diatonic chords, and closely related keys. A practical music theory reference.

Estimate audio file size from duration, sample rate, bit depth, and channels for uncompressed WAV, or from bitrate for MP3 and AAC. Plan recordings and uploads.

Write musical patterns in code and hear them instantly in the embedded Strudel editor (TidalCycles for the browser), with starter patterns and a mini-notation guide.

Free online tone generator from 1 Hz to 20 kHz with sine, square, triangle, and sawtooth waveforms. Test speakers, tune instruments, or check your hearing range.

Real-time audio spectrum analyzer in your browser: FFT frequency bars, peak frequency readout, and waveform view from the microphone. Free acoustic analysis tool.

Record your voice or instrument from the microphone right in the browser, watch the live level meter, then download as WAV. Private — audio never leaves your device.

Record your voice and transform it with pitch shift, robot, echo, and speed effects, then download the result as WAV. Runs fully in your browser — nothing uploaded.

Layer multiple audio files, balance each track's volume and pan, mute or solo, then export the combined mix as WAV — all in your browser, no upload, no sign-up.

Convert MP3, M4A, OGG, FLAC, or WebM audio to uncompressed WAV locally in your browser, with sample-rate and mono/stereo options. Files never leave your device.

Trim any audio file in your browser: see the waveform, drag to select a region, preview it, and export the cut as WAV or MP3. No upload — files stay on your device.

Change audio speed from 0.25x to 4x while keeping the original pitch — perfect for practice, transcription, and language learning. Export the result as WAV or MP3.

Reverse any audio file in your browser and download the result as WAV or MP3. Great for reverse cymbal effects, hidden-message checks, and sound design.

Play white, pink, or brown noise with volume control and a sleep timer, right in your browser. Free background noise for focus, sleep, studying, and masking sound.

Generate binaural beats with adjustable carrier and beat frequency, presets from delta to gamma, a session timer, and WAV export. Use headphones for the effect.