Viola tuner
Tune your viola online with your phone or laptop microphone, in standard C G D A tuning. Tap Use microphone, play one string at a time, and follow the meter until each note turns green. Nothing to download.
Standard viola tuning
Viola strings are tuned C G D A, from the lowest to the highest. That is a fifth below the violin, with the same top three notes as a violin's bottom three.
| String | Note | Frequency |
|---|---|---|
| 4th (thickest) | C3 | 130.81 Hz |
| 3rd | G3 | 196.00 Hz |
| 2nd | D4 | 293.66 Hz |
| 1st (thinnest) | A4 | 440.00 Hz |
Frequencies assume the standard reference pitch of A4 = 440 Hz.
How to tune a viola
- Tap Use microphone and allow access when your browser asks.
- Tune the A string first, then D, G and C.
- Use the fine tuners for small changes and the pegs only when a string is well off.
- Check all four again once you are done.
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Viola tuner questions
What are the viola string notes?
From the lowest string to the highest: C, G, D and A.
How is a viola tuned differently from a violin?
A viola swaps the violin's high E for a low C, so it is tuned C G D A instead of G D A E.
Does it work on my phone?
Yes. It works in Safari on iPhone and Chrome on Android, as well as desktop browsers. Hold the phone close to the instrument and allow microphone access when asked.
Why can't the tuner hear me?
Usually the browser hasn't been given access to the microphone, or it is listening to a different input. The tuner will tell you which, and how to fix it. Play one string at a time, close to the device.
Is my audio recorded?
No. The sound is analysed on your own device in real time. Nothing is recorded, stored or uploaded.