Reference pitch
A4 440 Hz
-50+50
--
Start the microphone and play one clear open string.
Play a note
--
Choose an instrument and tuning, then start the microphone.
Microphone audio is analyzed locally in this browser.

What Is an Online Violin Tuner?

A violin is tuned in perfect fifths from G3 to E5. The tuner follows one bowed or plucked string at a time and shows the cents difference from the selected G, D, A, or E target.

The target setup on this page is G3 - D4 - A4 - E5.

Live microphone detection

Pitch analysis runs continuously in the browser and displays the nearest target, frequency, and cents difference.

Visual pitch direction

The tuner shows whether the current note needs to move up, move down, or is within the in-tune range.

Reference notes

Select a visible target to hear a clean reference pitch when you want to compare the instrument by ear.

Private browser processing

Microphone samples are analyzed locally and are not uploaded as an audio recording.

How to Use the Violin Tuner

Tune in a quiet room and play only one clear note or open string at a time.

  1. 1

    Choose the tuning

    Start with G3 - D4 - A4 - E5. Available alternatives include Standard violin GDAE; use the Fiddle page for Cross A or Chromatic mode for custom scordatura.

  2. 2

    Start the microphone

    Allow microphone access, keep the instrument close enough for a clean signal, and avoid other sustained sounds.

  3. 3

    Play one target

    Play one open string and let it sustain while the tuner selects or follows its target.

  4. 4

    Adjust and recheck

    Move gradually toward the center, then repeat every target because changing one string can slightly affect the others.

When to Use the Violin Tuner

Use the dedicated preset when the target notes and physical string order matter more than a general chromatic reading.

Fine-tuner adjustment

Use the cents reading for small corrections after each string is close to its target pitch.

Peg tuning

Approach the target from below and turn the peg gradually to avoid overshooting or placing excess tension on the string.

Ensemble preparation

Set the A4 reference between 430 Hz and 450 Hz when matching an orchestra, teacher, piano, or recording.

Plucked or bowed input

Plucking often gives a cleaner initial reading; bowing helps confirm that the sustained pitch remains stable.

Violin Tuner vs. Chromatic Tuner

Both use the same pitch detector, but they organize targets differently.

Violin Tuner presetChromatic mode
TargetsG3 - D4 - A4 - E5All twelve semitones
Visual layoutInstrument-specific pegs and stringsDetected note and cents
Best forViolin TunerCustom tunings and other pitched instruments
Tuning choiceStandard violin GDAE; use the Fiddle page for Cross A or Chromatic mode for custom scordaturaNo instrument tuning required

A dedicated preset is easier when you want the correct string order. Chromatic mode is more flexible when you already know the target note.

Frequently Asked Questions

Is this violin tuner free?

Yes. It runs in a supported browser without requiring an account or installing a tuning app.

The default targets are G3 - D4 - A4 - E5.

Yes. Allow microphone permission, keep the device near the instrument, and play in a quiet place for a more stable reading.

One semitone contains 100 cents. A negative reading is flat, a positive reading is sharp, and a value close to zero is in tune.

Other strings, room noise, overtones, and a hard attack can compete with the fundamental. Mute unused strings and read the note after it settles.

No. Live microphone analysis stays in the browser and the tuner does not create or upload an audio recording.