Online Viola Tuner

Hz

Reference pitch

Something wrong?

Tune your viola with the microphone of your phone or computer. The viola preset is already selected: press the microphone, play a string, and the tuner shows the note and whether it is too low or too high.

Standard viola tuning: C G D A

Frequencies for A4 = 440 Hz
StringNoteFrequency (Hz)
4th string (C, lowest)C3130.81
3rd string (G)G3196.00
2nd string (D)D4293.66
1st string (A, highest)A4440.00

The viola is tuned a fifth below the violin: its three highest strings (G D A) are the same notes as the three lowest violin strings.

How to tune a viola in 3 steps

  1. Press the microphone button and allow microphone access when your browser asks.
  2. Start with the A string. Bow it or pluck it and let it ring. The tuner shows the note and a needle: left is flat, right is sharp.
  3. Turn the peg for large changes and the fine tuner for small ones, until the needle stays in the centre. Then tune D, G and C.

Tips for tuning a viola

  • Hold the phone or laptop close to the instrument, in a quiet room.
  • The C string is low (131 Hz). A long, firm bow stroke gives the tuner a clear signal.
  • Tune up to the note: if a string is sharp, loosen it a little below the note and bring it back up.
  • Does your orchestra tune to A4 = 442 Hz? Tap “A4 = 440 Hz” under the tuner to change the reference pitch.