Understanding the result
The selected target compares the note with standard viola C3 G3 D4 A4 tuning at A4 = 440 Hz.
Audio and music
Viola Tuner
Select the string and play a sustained note. Use small adjustments and let the reading settle.
Detected note—Waiting for microphone
TargetC3130.8 Hz
Flat—Sharp
Play one note at a time in a quiet room. A4 reference: 440 Hz.
Targets use A4 = 440 Hz. The lower C string may need a clear, close microphone.
How to use this tool
- Choose C3, G3, D4 or A4.
- Bow or pluck the selected string.
- Adjust until the reading approaches zero cents.
Troubleshooting
- Bow or pluck one isolated string and let the note settle.
- Move closer for low C and reduce other resonances if the detected note jumps.
Browser and device limitations
The tuner cannot assess instrument setup or safe string tension, and low notes may be limited by the microphone.
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Common questions
Why is there no E string?
Standard viola tuning starts lower than violin: C, G, D, A.
Why does the note change while bowing?
Bow pressure, harmonics and room noise can affect the detected pitch.
Why are viola and cello note names the same?
Both use C G D A, but the cello targets are one octave lower.