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Flute Tuner

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Flute Tuner

Free flute tuner online — use your microphone to tune flute notes with a cents meter. A440 reference, private, in your browser.

ReadyA4 = 440 HzConcert pitch (C)

Flat

Sharp

—

Start listening to tune

Mic level0%

Concert flute range (C4–C7)

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C6D6E6F6G6A6B6C7

Reference A4440 Hz

Equal temperament · concert pitch. Preference is saved locally.

Microphone

Stop listening before switching devices.

Smoothing35%

Higher = steadier needle, slightly slower response.

Sensitivity gate85%

Ignore weak or noisy frames so silence does not flicker notes.

Tips

Audio stays on your device — nothing is uploaded or recorded to a server.
Works on phones; allow microphone permission when prompted.
Play a steady tone for the clearest reading (chromatic detection).
Typical concert flute range is highlighted (C4–C7).