Free Online Viola Tuner for Standard and Shifted Tunings
Tune your 4-string viola with clean reference pitches on Protuningtool.com. Start with standard C G D A, shift the tuning up or down, hear each string one at a time, or play the full set in order before practice.
Use this viola tuner to hear C3, G3, D4, and A4 reference pitches for a standard 4-string viola.
Best Way to Use This Tuner
Tune first, then move straight into scales, drills, and other viola work while your instrument is still ready to go.
Viola Tuner
Click any string to hear its reference pitch. Click the same string again to stop. Use Tuning Shift for half-step and whole-step changes, or use Play All Strings to hear the full tuning sequence.
4-String Viola Reference
Use this tuner for everyday viola setup, warmups, scale work, bowing practice, and rehearsal prep. Tuning before you play saves time and makes everything else sound better.
Helpful Viola Tools
Once your viola is in tune, keep the momentum going with tools that fit naturally into the same practice session.
Viola Tuner FAQ
Quick answers for using this viola tuner effectively.
What is standard tuning for a 4-string viola?
Standard tuning is C3, G3, D4, A4, moving from the lowest-pitched string to the highest-pitched string.
How do I use this online viola tuner?
Click a string button to hear that pitch. Match your viola string to the reference sound. Click the same button again to stop, or use the Stop button to silence everything.
What does Tuning Shift do?
Tuning Shift moves all the reference pitches together. That helps if you want to tune down a half step, down a whole step, up a half step, or up a whole step.
What is Play All Strings for?
Play All Strings gives you the full sequence of string pitches one after another. It is useful for checking the whole viola quickly before you start playing.
Keep Going After You Tune
A tuned viola is the starting point, not the finish line. Jump into scale finding and viola practice drills while your instrument is already dialed in.
