Violin tuning

TonTreffer

Live pitch, four-tone analysis, or score a whole piece.

Reference A

440.0 Hz

Steps change A and play the tone. Tap Stop when finished.

Needs HTTPS or localhost. Allow the microphone.

Tap Start to use the mic.

— 0 Hz

−500+50

0 cents vs half-step

Play exactly four separate tones. The mic stops automatically; detailed analysis opens when done.

Mic off. Tap Begin, then play four clear tones.

4-tone analysis

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Steady notes add one tuning measure each. Your score averages them.

Piece length

Mic off. Pick length, then Begin.

Piece score

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Avg cents off pitch

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Your stand —

Best score: —
Pieces: 0
Last piece: —

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Tone 1 of 4

Now hearing

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−500+50

— vs half-step

Recent notes

Tones 0

Avg tuning —

Reference A: 440.0 Hz · Score = average cents off pitch.

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Tone waveform