Audio tools
Chromatic Tuner
Tune any instrument or your voice with a real-time chromatic tuner. Uses your microphone in-browser — nothing is recorded or uploaded.
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Play a note
♭ -500+50 ♯
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Reference A4 = 440 Hz. Best in a quiet room with a clear, sustained note.
Nothing leaves your browser
The microphone stream is analysed locally with autocorrelation pitch detection. No audio is recorded, buffered or uploaded, and the stream is released the moment you press Stop or leave the page.