Cello tuner
Tune your cello 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 cello tuning
Cello strings are tuned C G D A, from the lowest to the highest. That is an octave below the viola.
| String | Note | Frequency |
|---|---|---|
| 4th (thickest) | C2 | 65.41 Hz |
| 3rd | G2 | 98.00 Hz |
| 2nd | D3 | 146.83 Hz |
| 1st (thinnest) | A3 | 220.00 Hz |
Frequencies assume the standard reference pitch of A4 = 440 Hz.
How to tune a cello
- Tap Use microphone and allow access when your browser asks. Put the device near the f-holes.
- Tune the A string first, then D, G and C.
- Bow with long, even strokes. Low strings take a moment to settle on the meter.
- Use the fine tuners for small changes and check all four again at the end.
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Cello tuner questions
What are the cello string notes?
From the lowest string to the highest: C, G, D and A, an octave below the viola.
Why does the low C wobble on the meter?
Very low notes are harder for phone microphones to pick up. Move the device closer and use a steady bow stroke.
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.