Inactive

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0.00 Hz

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Play an open string and adjust until the strobe pattern freezes and the needle reads 0 cents.

Pitch history

Frequency spectrum

Tuning preset

Reference A4 (Hz)

Sensitivity: 0.85

Violin strings

G 196.00 Hz

D 293.66 Hz

A 440.00 Hz

E 659.25 Hz

Automatic string detection

Status: Disabled

Visual mode

Technical info

Usage Instructions

Allow microphone access

Click "Start Microphone" and grant your browser permission to access your microphone when prompted.

Play a string on your violin

Place your violin close to the microphone and play an open string (without pressing any finger on the fingerboard).

Adjust according to the indicator

Watch the needle and the displayed note. Turn the corresponding tuning peg until the needle centers (turns green).

Repeat for each string

Tune each string in order: E (E5), A (A4), D (D4), G (G3). You can use the string buttons for reference.

Frequently Asked Questions

Why isn’t it detecting my violin’s sound?

Ensure you’ve granted microphone access in your browser. Make sure you’re in a quiet environment and that your violin is close to the microphone. On mobile devices, headphones with a built-in microphone work best.

How accurate is this tuner?

Our tuner offers ±1 cent accuracy (1/100th of a semitone) thanks to the YIN pitch detection algorithm implemented with WebAssembly for maximum performance.

Can I use this tuner for other instruments?

Yes—although optimized for violin, it works well for viola, cello, or any bowed string instrument. It also functions as a general chromatic tuner for any instrument.

What are alternative tunings?

In addition to standard tuning (G-D-A-E), we offer alternatives such as "Scordatura" for baroque music, "High tuning" for soloists, and "Folk tunings" for traditional music.

Does it work offline?

Yes—once the page is loaded, you can use it offline. It’s a progressive web app (PWA) that runs entirely in your browser.

Microphone permission