Tools
Signal generators
Tones, sweeps, noise, and waveform generators. Every generator runs on the Web Audio API in your browser — nothing is uploaded, and no sound plays until you press play.
Signal generators
- 12-String Guitar Tuner Online — Octave PairsFree 12-string guitar tuner with microphone pitch detection. Tune the six EADGBE courses, with octave pairs on courses 6–3 and unison pairs on courses 2 and 1.
- 5/4 Metronome — Count 3+2 and 2+3A free 5/4 metronome that opens on five beats with the accent on the downbeat. Learn to count 3+2 and 2+3, hear five-beat grooves, and practise in five.
- 7-String Guitar Tuner Online — BEADGBEFree 7-string guitar tuner with microphone pitch detection. Tune BEADGBE, check every string's frequency, and get the steadiest reading from the low B.
- 7/8 Metronome — Count 2+2+3 and 3+2+2A free 7/8 metronome that marks the grouping for you. Count 2+2+3 or 3+2+2, feel the limp, and practise seven-beat grooves with a preset click.
- 8-String Guitar Tuner Online — F#BEADGBEFree 8-string guitar tuner with microphone pitch detection. Tune F#BEADGBE, check each string's frequency, and see what the low F# asks of the instrument.
- Banjo Tuner — Five-String gDGBD and Tenor CGDAFree banjo tuner with microphone pitch detection. Tune a five-string banjo in open G (gDGBD) or a tenor banjo (CGDA) with re-entrant fifth string guidance.
- Baritone Guitar Tuner Online — B StandardFree baritone guitar tuner with microphone pitch detection. Tune BEADF#B, check every string's frequency, and see why the low B needs a longer scale length.
- Bass Guitar Tuner — 4-String EADG and 5-String BEADGFree bass guitar tuner with microphone pitch detection. Tune EADG or BEADG, check each string's frequency, and get the steadiest possible low-string reading.
- Binaural Beats — Sleep & FocusGenerate binaural beats across delta, theta, alpha, beta and gamma bands with pure stereo isolation. Presets for sleep and focus. Free in your browser.
- Brown Note Test — Myth ExplainedExplore the brown note myth with sub-20 Hz infrasound demos, speaker excursion notes and honest limits. Science, not pranks. Free in your browser, no download.
- Cello Tuner — CGDA with Peg and Fine Tuner GuidanceFree cello tuner with microphone pitch detection. Tune CGDA, check each string's frequency, and use the pegs and tailpiece fine tuners correctly.
- Chromatic Tuner Online — Tune Any InstrumentFree chromatic tuner with microphone pitch detection. Read the nearest note and cents offset for any instrument, including transposing instruments and strings.
- Circle of Fifths — Interactive Wheel & Guitar GuideExplore the interactive circle of fifths: pick any key, see its signature and chords, hear them on guitar, and print the chart.
- Clarinet Tuner — Written vs Sounding Pitch, Barrel TuningFree clarinet tuner with mic pitch detection. Tune a B♭ clarinet, understand why written G sounds concert F, and adjust the barrel without chasing notes.
- Concert Pitch Generator — A440, A432 & A442 Reference TonesGenerate precision concert pitch reference tones in A440, A432, A442 and historical Baroque pitches. Reference drones for acoustic instruments.
- DADGAD Tuner Online — Modal Celtic TuningFree DADGAD guitar tuner with microphone pitch detection. Tune D A D G A D and understand why the open strings sound neither major nor minor.
- Double Bass Tuner — EADG and BEADG for the Lowest StringsFree double bass tuner with microphone pitch detection. Tune EADG or BEADG and get practical guidance for the lowest strings a small microphone can hear.
- Drone Generator — Reference Tones & SolfeggioPlay a continuous reference drone in A440, A432, A415, A430 or A442, or any pitch from the instrument presets and Solfeggio list. Free, no microphone needed.
- Drop C Tuner Online — CGCFAD Heavy TuningFree drop C guitar tuner with microphone pitch detection. Tune CGCFAD, check each string's frequency, and choose a gauge that keeps the low C playable.
- Drop D Tuner Online — DADGBe Guitar TuningFree drop D guitar tuner with microphone pitch detection. Tune the sixth string to D2 = 73.42 Hz and hear the one-finger power chord.
- Drum Metronome — Woodblock, Rim and Cowbell KitsA drummer's metronome with five click kits — woodblock, beep, tick, rim and cowbell — plus accents, subdivisions and 5/4 or 7/8 meters. Free in the browser.
- DTMF Generator — Dial Pad TonesGenerate DTMF touch-tones on an interactive dial pad with standard dual-tone pairs and event logging. For telephony and IVR testing. Free in your browser.
- Erhu Tuner — D4/A4 with the Qianjin and PegsFree erhu tuner with microphone pitch detection. Tune the two strings to D4 and A4 a fifth apart, with qianjin and peg guidance, using the chromatic display.
- Flute Tuner Online — Free with MicrophoneFree online flute tuner with microphone pitch detection — no app or sign-up. Tune concert F, B♭ or A directly and adjust headjoint pitch fast.
- French Horn Tuner Online — Free F HornFree online french horn tuner with microphone — no app or sign-up. Tune F horn a fifth below written with hand-position guide.
- Frequency Sweep Generator — FreeFree frequency sweep generator with linear, logarithmic and percussive sine sweeps between any frequencies. Adjustable time. Free in your browser, no download.
- Fretboard Trainer — Free Guitar Note QuizMaster the guitar fretboard with a free interactive note quiz. Drill positions 0–12, test note names, boost recall speed, and track accuracy.
- Guitar Chord Finder — Identify Chords by FingeringIdentify any guitar chord from its fingering. Free reverse chord finder: click frets, see chord names, intervals, inversions, and explore voicings.
- Guitar Scale Finder — Interactive Fretboard ToolInteractive guitar scale finder: explore all 17 scales across full neck, 5 box positions, and 3NPS views with note, degree, and interval labels.
- Guitar Tuner Online — Free Acoustic & ElectricFree online guitar tuner with microphone pitch detection — acoustic or electric, with no app or sign-up. Tune EADGBE, drop D, open G or DADGAD.
- Guzheng Tuner — 21 Strings in D Major PentatonicFree guzheng tuner with mic pitch detection. Tune 21 strings in D major pentatonic (D2–D6), string by string, with tuning-pin and movable bridge guidance.
- Half Step Down Tuner Online — Eb StandardFree half step down guitar tuner with microphone pitch detection. Tune Eb standard (Eb Ab Db Gb Bb Eb) and see every string's target frequency.
- Harp Tuner — Pedal, Lever and Celtic HarpsFree harp tuner with microphone pitch detection. Tune a pedal or lever harp string by string in chromatic mode, with pedal and lever tuning guidance.
- Instrument Tuner — Mic DetectionFree online instrument tuner with microphone pitch detection, cents needle and presets for guitar, violin and more. Private analysis. Runs in browser.
- Mandolin Tuner — GDAE, Octave Mandolin and the FamilyFree mandolin tuner with microphone pitch detection. Tune mandolin (GDAE) and octave mandolin (GDAE, an octave down), with a chart for mandola and bouzouki.
- Metronome with Subdivisions — Eighths, Triplets, 16thsA free metronome with subdivisions: hear eighth notes, triplets or sixteenths under the beat, in 2, 3, 4, 5, 6 or 7 beats per bar. Opens on eighths.
- Noise Generator — White to GreyFree noise generator with white, pink, brown, blue, violet and grey sounds plus level control and live readout. For testing and masking. Runs in browser.
- Odd-Meter Metronome — 5/4 and 7/8A free odd-meter metronome with 5/4 and 7/8 selected from the meter row, accent patterns that mark the grouping, and counting methods for both. Opens on 5/4.
- Online Metronome — No DownloadOnline metronome drawn as a mechanical pendulum: drag for 30–240 BPM, tap tempo, meters, subdivisions, and drift-free Web Audio timing. Free, no signup.
- Online Tone Generator — Free ToolOnline tone generator drawn as a signal generator: dial any frequency from 20 Hz to 20 kHz with sine, square, sawtooth and triangle waves, plus free WAV export.
- Open D Tuner Online — DADF#AD Slide GuitarFree open D guitar tuner with microphone pitch detection. Tune DADF#AD, check each string's frequency, and see how a capo at fret 2 gives open E.
- Open G Tuner Online — DGDGBD Slide TuningFree open G guitar tuner with microphone pitch detection. Tune DGDGBD, see every target frequency, and learn the slide and Delta blues shapes behind the tuning.
- Oud Tuner — Arabic C–F–A–D–G–C TuningFree oud tuner with microphone pitch detection. Tune the Arabic oud C2–F2–A2–D3–G3–C4 course by course, with the Turkish Bolahenk alternative explained.
- Perceptual Sine Sweep — 20 Hz–20 kHzPlay a perceptual sine sweep from 20 Hz to 20 kHz in equal hearing bands with even pitch steps and extra bass dwell. Free in your browser, no download.
- Pitch Pipe — Online Chromatic C4 to C5A chromatic online pitch pipe: 13 one-shot reference tones from C4 to C5, with C4 labelled as the root. Tap a note to hear it. No microphone, no autoplay.
- Polyrhythm Generator — 3:2, 4:3, 5:4, 5:3Generate polyrhythms with two independent metronome voices. Pick a ratio, hear both grids at once, and practise 3:2, 4:3, 5:4 or 5:3 with per-voice volume.
- Saxophone Tuner Online — Free Alto & TenorFree online saxophone tuner with microphone — no app or sign-up. Tune alto and tenor sax, alto sax and tenor sax notes in concert pitch fast.
- Shamisen Instrument: Guide, Tunings & Free Online PlayerThe shamisen instrument is a 3-string Japanese lute. Learn its history, neck types, tunings, and sawari, or play the interactive instrument free online.
- Shamisen Tuner — Hon-chōshi, Ni-agari & San-sagariFree online shamisen tuner — tune 一の糸/二の糸/三の糸 by microphone to hon-chōshi (C-F-C), ni-agari (C-G-C) and san-sagari (C-F-B♭). No app; works on phone.
- Shepard Tone — Endless IllusionHear the Shepard tone endless pitch illusion rise or fall forever with octave-stacked glides. Famous film-tension effect. Free in your browser, no download.
- Sitar Tuner — Raga Tuning with a Chromatic TunerFree sitar tuner with microphone pitch detection. Tune the playing strings relative to the raga's Sa and the taraf strings to the scale, string by string.
- Sleep Sounds — White, Pink, BrownSleep sounds with continuous white, pink and brown noise plus 15–60 minute timers and gentle fade-out. Mask night noise. Free in your browser, no download.
- Speed Trainer Metronome — Automatic Tempo RampA free speed trainer metronome: start at a comfortable tempo and let it step up automatically every few bars until a ceiling you set. Then it holds there.
- Tap Tempo — Free BPM CounterTap the pad or the spacebar to measure any tempo in BPM. Averages your tap intervals, shows the tempo marking and the session's slowest and fastest reading.
- Trombone Tuner Online — Free with MicFree online trombone tuner with microphone — no app or sign-up. Tune concert F and Bb directly and set the main slide fast.
- Trumpet Tuner Online — Free Bb with MicFree online trumpet tuner with microphone — no app or sign-up. Tune Bb trumpet concert F and Bb directly with valve-slide guide.
- Ukulele Tuner — Standard C, Low G and BaritoneFree ukulele tuner with microphone pitch detection. Tune standard C (GCEA), low G and baritone (DGBE), and understand the re-entrant high G string.
- Viola Tuner — CGDA Standard TuningFree viola tuner with microphone pitch detection. Tune CGDA, check each string's frequency, and see how the viola's tuning differs from the cello's.
- Violin Tuner — GDAE with Fine Tuner and A442 GuidanceFree violin tuner with microphone pitch detection. Tune GDAE, check each string's frequency, and use pegs and fine tuners safely.
- Virtual Bass Guitar — Play 4 & 5-String OnlinePlay virtual bass online in 4-string EADG or 5-string BEADG. Explore bass guitar notes, tap or strum strings, and practice with finger and pick tones.
- Virtual Guitar Amp — Free Online Amp SimPlay through a free online virtual guitar amp. Audition 4 classic presets or plug in your guitar with zero downloads, low latency, and a safe limiter.
- Virtual Guitar Online — Play Chords, Scales & FretboardPlay a free virtual guitar online: interactive fretboard, chords, scales, strumming and a note trainer. No download or signup — mouse, touch or keyboard.
- Virtual Piano & Chord Lab — Play, Learn Chords & ScalesPlay a free virtual piano with 25–88 keys and no download, featuring a practice desk for chords, scales, progressions, and a find-the-note trainer.
- Virtual Ukulele — Play & Find Chords OnlinePlay ukulele online with an interactive 4-string fretboard. Find chords, toggle High-G and Low-G tunings, hear realistic plucks, and practice anywhere.
- Visual Metronome — Silent PracticeA free visual metronome for silent practice: the pendulum swings on the audio clock, clicks can be muted, and stage mode fills the screen.
- Water Eject Sound — Speaker Cleaner for Phone & AirPodsSpeaker cleaner sound: a pulsed 165 Hz tone for the iPhone water eject trick, clearing water from speaker mesh on most phones. Free, runs in your browser.
- Waveform Generator — Custom WavesBuild custom waveforms with Fourier additive synthesis online — 16 harmonic partials, live playback and a real-time waveform view. Free additive synthesizer in your browser. For timbre study.
Analyzers & meters
Spectrum, waveform, loudness and level analysis — all measured live in your browser.
- Audio Oscilloscope — Live ViewerFree online oscilloscope showing live audio waveforms with time-base, gain, pause and L/R colors. Sine renders smooth, clipping flats. Runs in browser.
- Audio Spectrum Analyzer — FreeFree audio spectrum analyzer with log-frequency display, peak hold, L/R colors and spectrogram. Verify with the built-in 1 kHz tone. Runs in your browser.
- Dithering Demo — Noise ShapingHear dithering and noise shaping tame quantization distortion when reducing bit depth, with spectrum views. Interactive demo. Free in your browser, no download.
- Loudness Meter — Free LUFS ToolFree online loudness meter measuring Integrated LUFS, short-term and momentary loudness with K-weighting. For mixes and masters. Runs in your browser.
- Online Decibel Meter — Free ToolFree online decibel meter showing live dBFS levels with Fast/Slow ballistics and peak hold. Relative readings, not calibrated SPL. Runs in your browser.
- Tinnitus Frequency Test — Match PitchMatch your tinnitus pitch with sine tones and narrowband noise, per ear, with saved matches. Educational screening, not a diagnosis. Free in your browser.
Effects & processing
Convert and shape audio files entirely in your browser.